CN101339344A - Transflective LCD panel - Google Patents

Abstract

The invention discloses a half-transmission and half-reflection liquid crystal display panel, which comprises a first substrate, a second substrate and a liquid crystal layer. There are a plurality of pixel areas on the first substrate, each pixel area has a reflective area and a transmissive area, and each pixel area is configured with a scan line, a data line, a switch component and a pixel electrode. The switch component is located in the reflective area and is electrically connected with the scan line and the data line. The pixel electrodes are located in the reflection area and the transmission area. The second substrate is located opposite to the first substrate, wherein the second substrate has a plurality of unit areas corresponding to the pixel area, and each unit area is provided with a light-emitting component and a signal line. The light emitting component is arranged corresponding to the penetration area of the first substrate. The signal line is electrically connected with the light emitting component.

Description

Transflective LCD panel

technical field

The present invention relates to a liquid crystal display panel (Liquid Crystal Display panel, LCD panel), and in particular to a transflective Liquid Crystal Display panel with double-sided display function.

Background technique

With the advancement of display technology, people can make their lives more convenient with the help of display devices. In order to achieve light and thin displays, flat panel displays (FPD) have become the mainstream at present. Among many flat-panel displays, Liquid Crystal Display (LCD) has superior characteristics such as high space utilization efficiency, low power consumption, no radiation, and low electromagnetic interference, so LCD displays are very popular among consumers. However, liquid crystal displays are non-self-illuminating displays, so an external light source is needed to provide sufficient brightness for the liquid crystal display panel. According to the source or position of the light source, it can be divided into transmissive liquid crystal display, semi-transmissive and semi-reflective liquid crystal display There are three types of monitors and reflective liquid crystal displays.

The transmissive liquid crystal display mainly uses a backlight module as a light source, and its pixel electrode is a transparent electrode to facilitate penetration of the backlight. The reflective liquid crystal display mainly uses a front light or external ambient light as a light source, and its pixel electrode is made of metal or a conductive material with good reflection characteristics, which is suitable for reflecting the front light or external ambient light. The semi-transmissive and semi-reflective liquid crystal display can use the backlight source and the external ambient light to display at the same time, and its pixel area can be divided into a reflective area and a transmissive area. The reflective area has a reflective layer suitable for reflecting external ambient light. On the penetrating area, there is a transparent pixel electrode to facilitate penetration of the backlight source. Since the transflective liquid crystal display can utilize the backlight source and external ambient light at the same time, the application of the transflective liquid crystal display panel has gradually attracted attention from all sides. However, the light from the backlight also enters the reflective area, but this part of the light does not substantially contribute to the reflective area.

On the other hand, with the advancement of display technology, liquid crystal displays can be used in a wide range of fields. Among them, the liquid crystal display with double-sided display function can be applied to portable consumer electronic devices, or used as a large-size liquid crystal display television for viewing by the public. Therefore, the market for liquid crystal displays that can provide double-sided display functions should not be underestimated. Generally speaking, two liquid crystal display panels can be used to complete the manufacture of a double-sided liquid crystal display, so as to achieve the purpose of double-sided display. However, in terms of circuit design, this technology not only needs to use two sets of driving circuits to respectively drive two liquid crystal display panels, but also increases the size, weight and production cost of the liquid crystal display.

Contents of the invention

The invention provides a semi-transmissive and semi-reflective liquid crystal display panel, which has a light-emitting component to provide a light source required for displaying in the transmissive area.

The present invention further provides a transflective liquid crystal display panel, which has the function of double-sided display.

To specifically describe the content of the present invention, a transflective liquid crystal display panel is proposed here, which includes a first substrate, a second substrate and a liquid crystal layer. There are multiple pixel areas on the first substrate, each pixel area has a reflective area and a transmissive area, and each pixel area includes a first scan line, a data line, a first switch component and a pixel electrode. . The first switch component is located in the reflection area and is electrically connected with the first scan line and the data line. The pixel electrodes are located in the reflection area and the transmission area. The second substrate is located opposite to the first substrate, wherein the second substrate has a plurality of unit areas corresponding to the pixel area, and each unit area includes a light-emitting component and a signal line. The light-emitting component is disposed corresponding to the penetration area of the first substrate, and the signal line is electrically connected with the light-emitting component. The liquid crystal layer is located between the first substrate and the second substrate.

In an embodiment of the present invention, the transflective liquid crystal display panel further includes an inner polarizing film, and the polarizing film is disposed in each unit area of the second substrate and covers the light-emitting components.

In an embodiment of the present invention, the transflective liquid crystal display panel further includes a color filter pattern, and the color filter pattern is disposed in each unit area of the second substrate.

In an embodiment of the present invention, the transflective liquid crystal display panel further includes an electrode layer, and the electrode layer is disposed in each unit area of the second substrate.

In an embodiment of the present invention, the transflective liquid crystal display panel further includes a light-shielding layer, and the light-shielding layer is arranged around each unit area of the second substrate.

In an embodiment of the present invention, the transflective liquid crystal display panel further includes a flat layer, which is arranged in each pixel area of the first substrate and covers the reflective area, but exposes the Through area. In one embodiment, the surface of the flat layer has a plurality of convex patterns. In another embodiment, the transflective liquid crystal display panel further includes a reflective layer covering the flat layer.

In an embodiment of the invention, the pixel electrode covers the reflective layer.

In an embodiment of the present invention, each pixel area further includes a second scan line and a second switch element. The second scan line is substantially parallel to the first scan line. The second switch component is located in the penetration area and is electrically connected with the second scan line and the data line. In addition, the pixel electrode is divided into a first pixel electrode and a second pixel electrode. The first pixel electrode is located in the reflection area and is electrically connected with the first switch component. The second pixel electrode is located in the penetration area and is electrically connected with the second switch component. In one embodiment, the first electrode layer and the second electrode layer are disposed in each unit area of the second substrate, the first electrode layer corresponds to the first pixel electrode, and the second electrode layer corresponds to the second pixel electrode.

In an embodiment of the present invention, the transflective liquid crystal display panel further includes a lower polarizer and an upper polarizer. The lower polarizer is arranged on the first substrate, and the upper polarizer is arranged on the second substrate.

In an embodiment of the present invention, the light-emitting component includes a cathode layer, an anode layer and an organic light-emitting layer, wherein the organic light-emitting layer is located between the cathode layer and the anode layer. In one embodiment, the organic light-emitting layer is formed by stacking multiple layers of organic light-emitting materials. In another embodiment, the organic light-emitting layer includes [octahydroxy aluminum: rubrene] (tris-(8-hydroxyquinolinol) aluminum: rubrene, Alq ₃ : rubrene), triarylamine derivatives (α-naphylhenyldiamine, NPB) or Alq(tris(8-quinolinato-N1,08)-aluminum)). In another embodiment, the organic light emitting layer is a white light emitting layer.

To specifically describe the content of the present invention, a transflective liquid crystal display panel is proposed here, which includes a first substrate, a second substrate, a plurality of white light-emitting components, and a liquid crystal layer. A plurality of pixel regions are arranged on the first substrate. The second substrate has a plurality of unit areas, and each unit area has a reflection area and a transmission area. The white light emitting components are respectively arranged in the penetration regions of the second substrate. The liquid crystal layer is located between the first substrate and the second substrate.

In an embodiment of the present invention, the transflective liquid crystal display panel further includes an inner polarizing film, and the polarizing film is disposed on the second substrate and covers the white light-emitting component.

In an embodiment of the present invention, the transflective liquid crystal display panel further includes an electrode layer, and the electrode layer is disposed on the second substrate.

In an embodiment of the present invention, the transflective liquid crystal display panel further includes a flat layer, and the flat layer is disposed on the first substrate and covers the pixel area. In one embodiment, a partial surface of the flat layer has a plurality of raised patterns. In another embodiment, the transflective liquid crystal display panel further includes a reflective layer, and the reflective layer covers part of the surface of the flat layer.

In an embodiment of the present invention, each pixel area includes a scan line, a data line, a switch element and a pixel electrode. The switch component is electrically connected to the scan line and the data line, and the pixel electrode is electrically connected to the switch component.

In an embodiment of the present invention, the transflective liquid crystal display panel further includes a first electrode layer and a second electrode layer, wherein the first electrode layer and the second electrode layer are disposed on the second substrate. The first electrode layer is located in the reflection area, and the second electrode layer is located in the transmission area.

In an embodiment of the present invention, each pixel area includes a first scan line, a data line, a first switch element, a first pixel electrode, a second scan line, a second switch element and a second pixel electrode. The first switch component is correspondingly arranged in the reflection area of the second substrate, and is electrically connected with the first scan line and the data line. The first pixel electrode is correspondingly arranged in the reflection area of the second substrate, and is electrically connected with the first switch component. The second scan line is substantially parallel to the first scan line. The second switch component is correspondingly arranged in the penetration area of the second substrate, and is electrically connected with the second scan line and the data line. The second pixel electrode is correspondingly arranged in the penetration area of the second substrate, and is electrically connected with the second switch component.

In an embodiment of the present invention, the white light-emitting component includes a cathode layer, an anode layer and an organic light-emitting layer, wherein the organic light-emitting layer is located between the cathode layer and the anode layer. In one embodiment, the organic light-emitting layer is formed by stacking multiple layers of organic light-emitting materials. In another embodiment, the organic light-emitting layer includes [octahydroxy aluminum: rubrene] (tris-(8-hydroxyquinolinol) aluminum: rubrene, Alq ₃ : rubrene), triarylamine derivatives (α-naphylhenyldiamine, NPB) or Alq(tris(8-quinolinato-N1,08)-aluminum)).

In an embodiment of the present invention, there is a first gap between the first substrate and the second substrate in the reflective area, and a second gap between the first substrate and the second substrate in the penetrating area, and the second The second gap is about twice the first gap.

The semi-transmissive semi-reflective liquid crystal display panel of the present invention has a light-emitting component, which can provide the required light source for displaying in the transmissive area. In addition, the reflective area and the transmissive area display images facing different sides, so that the transflective liquid crystal display panel has the function of double-sided display.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, preferred embodiments will be described in detail below together with the accompanying drawings.

Description of drawings

FIG. 1A is a partial cross-sectional schematic diagram of a transflective liquid crystal display panel according to a first embodiment of the present invention;

1B is a partial circuit diagram of the first substrate of the transflective liquid crystal display panel according to the first embodiment of the present invention;

1C is a partial circuit diagram of the second substrate of the transflective liquid crystal display panel according to the first embodiment of the present invention;

2A to 2F are schematic cross-sectional views showing the manufacturing process of the first substrate of the transflective liquid crystal display panel according to the first embodiment of the present invention;

3A to FIG. 3E are schematic cross-sectional views showing the manufacturing process of the second substrate of the transflective liquid crystal display panel according to the first embodiment of the present invention;

FIG. 4A is a partial cross-sectional schematic diagram of a transflective liquid crystal display panel according to a second embodiment of the present invention;

4B is a partial circuit diagram of the first substrate of the transflective liquid crystal display panel according to the second embodiment of the present invention.

[Description of main component symbols]

100, 600: transflective LCD panel

200, 700: the first substrate

210, 710: pixel area

212, 312: reflection area

214, 314, 714, 814: penetration zone

216, 716: scan line

218: data line

220, 720: switch components

220C, 720C: passage area

200C’: quasi-passage area

220D, 720D: drain

220G, 720G: grid

220S, 720S: source

222, 722a, 722b: pixel electrodes

224: flat layer

224P: raised pattern

226: reflective layer

240: lower polarizing film

300, 800: second substrate

310, 810: unit area

320: signal line

330, 830a, 830b: electrode layers

340: upper polarizing film

350: shading layer

360: color filter pattern

400: Luminous components

410: cathode layer

420: anode layer

430: organic light-emitting layer

440: inner polarizing film

500: liquid crystal layer

AS: Amorphous silicon layer pattern

C _M1 : Bottom electrode

C _M2 : upper electrode

H1, H2: opening

G1: first gap

G2: second gap

GI: gate insulating layer

C _st : storage capacitor

R, R', T, T': observers

RL, RL’, TL, TL’: light source

Detailed ways

【The first embodiment】

FIG. 1A shows a schematic partial cross-sectional view of a transflective liquid crystal display panel according to the first embodiment of the present invention, wherein FIG. 1A only shows a pixel region 210 and a unit region 310 corresponding to the pixel region 210 to facilitate description of this embodiment. example. FIG. 1B shows a partial circuit diagram of the first substrate of the transflective liquid crystal display panel according to the first embodiment of the present invention, and FIG. 1C shows the circuit diagram of the transflective liquid crystal display panel according to the first embodiment of the present invention. Partial circuit diagram of the second substrate. Please refer to FIG. 1A , FIG. 1B and FIG. 1C , the transflective liquid crystal display panel 100 of this embodiment includes a first substrate 200 , a second substrate 300 and a liquid crystal layer 500 . The second substrate 300 is located opposite to the first substrate 200 , and the liquid crystal layer 500 is located between the first substrate 200 and the second substrate 300 .

As shown in FIG. 1A and FIG. 1B , a plurality of pixel regions 210 are disposed on the first substrate 200, each pixel region 210 has a reflective region 212 and a transmissive region 214, and each pixel region 210 is further configured with a scanning line 216, a data line 218, a switch component 220 and a pixel electrode 222, wherein the switch component 220 is located in the reflection area 212, and is electrically connected with the scan line 216 and the data line 218, and the pixel electrode 222 is located in the reflection area 212 and The penetrating region 214 is electrically connected to the switch component 220 . In this embodiment, the switch element 220 may be composed of a gate 220G, a gate insulating layer GI, a channel region 220C, a source 220S, and a drain 220D, wherein the gate 220G and the scan line 216 may be formed by a first conductive layer, and The source 220S, the drain 220D and the data line 218 can be formed by the second conductive layer.

As shown in FIG. 1A and FIG. 1C , the second substrate 300 has a plurality of light emitting elements 400 , a plurality of signal lines 320 , and a plurality of unit regions 310 corresponding to the pixel regions 210 . Each unit area 310 has a reflective area 312 and a penetrating area 314, and each unit area 310 is further configured with a light emitting element 400 and a signal line 320, wherein the light emitting element 400 is disposed in the penetrating area 314, and the signal line 320 It is electrically connected with the light emitting component 400, and the signal line 320 can be a Vdd signal line, and the light emitting component 400 can be a white light emitting component.

Practically, the transflective liquid crystal display panel 100 can further provide an electrode layer 330 in each unit area 310 on the second substrate 300 . When the scan line 216 and the data line 218 respectively transmit a scan signal and a data signal to drive the switch element 220 , the pixel electrode 222 can obtain the data signal transmitted by the data line 218 . At this time, the voltage difference between the pixel electrode 222 and the electrode layer 330 can generate an electric field effect, and this electric field effect can change the arrangement of the liquid crystal molecules in the liquid crystal layer 500, so that the transflective liquid crystal display panel 100 can display . In addition, when there is a voltage difference between the pixel electrode 222 and the electrode layer 330 , the capacitive effect generated by the pixel electrode 222 , the liquid crystal layer 500 and the electrode layer 330 will form a liquid crystal capacitor.

Since the signal line 320 drives the light-emitting component 400 to make the light-emitting component 400 emit white light, the light-emitting component 400 can provide the light source TL required for displaying through the regions 214 and 314, so that the observer T can watch the transflective liquid crystal The screen displayed on the display panel 100 . That is to say, the penetrating regions 214 and 314 can display images without the need of a backlight module. On the other hand, in the reflective area 212 of the present embodiment, the transflective liquid crystal display panel 100 may further include a reflective layer 226 for reflecting external ambient light. In other words, the external ambient light can provide the light source RL required by the reflective regions 212 and 312 for display, so that the viewer R can watch the images displayed on the transflective liquid crystal display panel 100 . That is to say, the reflective areas 212 and 312 can display images without a backlight module.

It can be seen from the above that the transflective liquid crystal display panel 100 of this embodiment can provide double-sided display. In addition, the pixel electrode 222 is disposed in the reflective region 212 and the transmissive region 214 , therefore, the frames displayed by the reflective regions 212 , 312 and the transmissive regions 214 , 314 are substantially the same frame. However, in order to make the images displayed in the reflective areas 212, 312 and the transmissive areas 214, 314 have the same display quality, the optical path difference (optical path difference) of the light rays respectively emitted by the light source RL and the light source TL should be zero theoretically. . Generally speaking, the gap between the first and second substrates 200, 300 and the collocation between the lower polarizing film 240 (disposed on the first substrate 200) and the upper polarizing film 340 (disposed on the second substrate 300), The optical path length of the light can be determined.

In detail, as shown in FIG. 1A , there is a first gap G1 between the first substrate 200 and the second substrate 300 in the reflective regions 212 and 312 , while the first substrate 200 and the second substrate in the penetrating regions 214 and 314 There is a second gap G2 between the substrates 300 . Since the light from the light source RL penetrates the second substrate 300 and enters the reflection areas 212 and 312 , it will reflect with the reflective layer 226 and then exit the second substrate 300 , so the light from the light source RL will pass through the second substrate 300 twice. That is to say, the light from the light source RL passes through the upper polarizing film 340 twice. On the other hand, in the penetrating regions 214 and 314 , the light from the light source TL is emitted from the light emitting element 400 on the second substrate 300 , and then passes through the first substrate 200 after passing through the path length substantially equal to the second gap G2 . Therefore, the light from the light source TL passes through the lower polarizing film 240 once.

It can be seen from the above that when the second gap G2 is substantially twice the first gap G1, the optical path length of the light passing through the liquid crystal layer 500 in the transmissive regions 214, 314 is substantially equal to that of the light passing through the liquid crystal layer in the reflecting regions 212, 312. The optical path length of layer 500 is long. However, the light from the light source RL in the reflective areas 212 and 312 passes through the upper polarizing film 340 twice, but the light from the light source TL in the penetrating areas 214 and 314 passes through the lower polarizing film 240 only once. In practice, an inner polarizing film 440 can be disposed in the transmissive regions 214, 314 to further compensate the optical path difference of the light rays of the two light sources RL, TL. In this embodiment, the inner polarizing film 440 is located on the second substrate 300 and covers the light emitting component 400 .

Generally speaking, in order to improve the display quality of the transflective liquid crystal display panel 100 , a storage capacitor C _st may be further disposed in the pixel structure 210 to maintain the voltage difference between the pixel electrode 222 and the electrode layer 330 . For example, the storage capacitor C _st in this embodiment is composed of the lower electrode _CM1 , the upper electrode _CM2 and the gate insulating layer GI sandwiched between the upper and lower electrodes _CM2 and _CM1 . Of course, the storage capacitor C _st can also be of other types, which should be known by those skilled in the art, and will not be stated here.

Practically, the transflective liquid crystal display panel 100 can further provide a flat layer 224 in each pixel area 210 on the first substrate 200 , and the flat layer 224 covers the pixel area 210 . More specifically, the flat layer 224 covers the reflective region 212, but exposes the penetrating region 214, and in this embodiment, the thickness of the flat layer 224 is appropriately adjusted so that the second gap G2 is substantially the first gap 2 times of G1. In this way, a reflective layer 226 can be disposed on a partial surface of the flat layer 224 to reflect light from the light source RL. In general, in order to improve the display effect of the transflective liquid crystal display panel 100 , a plurality of protruding patterns 224P may be formed on a partial surface of the flat layer 224 .

Please refer to FIG. 1A and FIG. 1B at the same time. It should be noted that, in this embodiment, the pixel electrode 222 covers the reflective layer 226 . In order for the pixel electrode 222 to obtain the data signal transmitted by the data line 218 , the pixel electrode 222 can be electrically connected to the data line 218 by contacting the drain 220D. In addition, the pixel electrode 222 can also be electrically connected to the data line 218 by contacting the upper electrode _CM2 of the storage capacitor _Cst . In other embodiments, the above-mentioned manner of electrically connecting the pixel electrode 222 to the data line 218 can be used alternatively. However, the present invention is not intended to limit the above-mentioned only way to electrically connect the pixel electrode 222 to the data line 218 , and other ways should be understood by those skilled in the art, and will not be stated one by one here.

The above is the general structure of the transflective liquid crystal display panel 100 of this embodiment. Next, the production process of the transflective liquid crystal display panel 100 is used to further understand its detailed structure. 2A to 2F are cross-sectional schematic diagrams illustrating the manufacturing process of the first substrate of the transflective liquid crystal display panel according to the first embodiment of the present invention. Wherein, FIG. 2A to FIG. 2F only show one pixel area 210 , and the pixel area 210 can be divided into a reflective area 212 and a transmissive area 214 . Please refer to FIG. 1B and FIG. 2A at the same time, forming a first conductive layer on the first substrate 200, and patterning the first conductive layer to form the scanning line 216, the gate 220G and the lower electrode C _M1 of the storage capacitor C _st . Wherein, the gate 220G is located in the reflective region 212 .

Furthermore, referring to FIG. 2B, a gate insulating layer GI and an amorphous silicon layer are sequentially formed on the first substrate 200, and the amorphous silicon layer is patterned to form a plurality of amorphous silicon layer patterns AS (FIG. 2B only Draw an example). Wherein, the quasi-channel region 200C' above the gate 220G is the position where the channel region 200C is formed in subsequent process steps. However, in other embodiments, the channel region 200C may also be formed in this step, and the present invention does not limit the formation step of the channel region 200C.

Next, referring to FIG. 1B and FIG. 2C at the same time, a second conductive layer is formed on the first substrate 200, and the second conductive layer is patterned to form the data line 218, the source electrode 220S, the drain electrode 220D and the storage capacitor C _st The upper electrode C _M2 . In this embodiment, the channel region 200C may be formed simultaneously with the formation of the source 220S and the drain 220D. However, the method and steps of forming the channel region 200C are not limited thereto. Up to now, the switch assembly 220 and the storage capacitor C _st of this embodiment have been substantially completed. The gate 220G and the source 220S of the switch component 220 can be electrically connected to the scan line 216 and the data line 218 respectively, and the channel region 200C can be used as an electronic channel between the source 220S and the drain 220D.

After that, referring to FIG. 2D , a flat material layer is formed on the first substrate 200 and patterned to form a flat layer 224 with a plurality of protrusion patterns 224P in the reflective area 212 of the pixel region 210 . That is to say, the penetration region 214 of this embodiment is not provided with the flat layer 224 . However, before forming the flat layer 224, a protective material layer may be selectively formed on the first substrate 200, and the protective material layer may be patterned to form a protective layer PV to cover the data line (not shown), the source 220S, the drain 220D, the upper electrode _CM2 of the storage capacitor _Cst , and the gate insulating layer GI. Certainly, the designer can determine the principle of patterning the protective material layer according to the actual situation, and the present invention does not limit the above principle.

Based on the above, the principle of patterning the flat material layer 224 is to expose part of the drain electrode 220D and the upper electrode _CM2 of the storage capacitor. This can be used as a preparation for the subsequent process, so that the drain electrode 220D and the upper electrode _CM2 are electrically connected. to the pixel electrode 222. For example, the flat layer 224 of this embodiment may have openings H1 and H2 to respectively expose part of the drain electrode 220D and the upper electrode _CM2 , and the pixel electrode 222 may be connected to the drain electrode 220D through the opening H1 and the opening H2 respectively. It is electrically connected with the upper electrode C _M2 . Certainly, the designer can determine the principle of patterning the flat material layer according to the actual situation, and the present invention does not limit the above principle. In addition, the principle of patterning the protective material layer in this embodiment is similar to the principle of patterning the flat material layer.

Then, referring to FIG. 2E , a reflective material layer is formed on the first substrate 200 , and the reflective material layer is patterned to form a reflective layer 226 on a partial surface of the planar layer 224 . It should be noted here that the configuration of the reflective layer 226 depends on its material properties. Furthermore, whether the material of the reflective layer 226 has insulating properties will affect its position on the flat layer 224 . For example, in this embodiment, when the reflective layer 226 is made of insulating material, if the reflective layer 226 completely covers the openings H1 and H2 , the pixel electrode 222 cannot be in contact with the drain electrode 220D or the upper electrode _CM2 . Therefore, the reflective layer 226 with insulating properties can be disposed on a partial surface of the planar layer 224 by exposing the openings H1 and H2 , as shown in FIG. 2E . Conversely, when the reflective layer 226 is not made of insulating material, the configuration of the reflective layer 226 can have greater flexibility. In other words, the reflective layer 226 can cover the openings H1, H2, or expose the openings H1, H2, depending on whether it is Depending on its insulating properties. However, the configuration of the reflective layer 226 still depends on the layout design of the product and the material of the relevant film layer. That is, the present invention does not limit the above-mentioned to the only form of the reflective layer 226 .

Then, referring to FIG. 2F , a pixel electrode 222 is formed on the first substrate 200 . In this embodiment, the pixel electrode 222 is in contact with the drain electrode 220D and the upper electrode _CM2 through the opening H1 and the opening H2 respectively. Up to now, the configuration of the components on the first substrate 200 has been roughly completed.

3A to FIG. 3E are cross-sectional views showing the manufacturing process of the second substrate of the transflective liquid crystal display panel according to the first embodiment of the present invention. Wherein, FIG. 3A to FIG. 3E only show one unit area 310 , and the unit area 310 can be divided into a reflection area 312 and a transmission area 314 . Please refer to FIG. 1C and FIG. 3A first, a light-emitting component 400 is formed on the second substrate 300, wherein the light-emitting component 400 includes a cathode layer 410, an anode layer 420, and an organic light-emitting layer located between the cathode layer 410 and the anode layer 420. 430.

Based on the above, the manufacturing steps of the light-emitting component 400 in this embodiment can sequentially form the cathode layer 410 , the organic light-emitting layer 430 and the anode layer 420 on the second substrate 300 . In detail, when the signal line 320 drives the light-emitting component 400 , electrons from the cathode layer 410 and holes from the anode layer 420 will combine in the organic light-emitting layer 430 to emit light. In practice, the cathode layer 410 and the anode layer 420 can be fabricated by using conductive materials (such as aluminum Al) and transparent conductive materials (such as indium tin oxide ITO, indium zinc oxide IZO). In this embodiment, the organic light-emitting layer 430 may be a white light-emitting layer formed by stacking multiple layers of organic light-emitting materials, so that the light-emitting component 400 emits white light. The material of the organic light-emitting layer 430 includes: [octahydroxyquinolinol:rubrene] (tris-(8-hydroxyquinolinol)aluminum:rubrene, Alq ₃ :rubrene) that can excite red light, triarylamines that can excite blue light Derivatives (α-naphylhenyldiamine, NPB) or 8-hydroxyquinoline aluminum (Alq(tris(8-quinolinato-N1,08)-aluminum)) that can excite green light.

However, the designer should select suitable materials to make the cathode layer 410 , the anode layer 420 and the organic light-emitting layer 430 according to the actual situation so as to meet the specifications of the product, and the present invention is not intended to limit the above-mentioned materials.

Furthermore, please refer to FIG. 3B , an inner polarizing film 440 is formed on the second substrate 300 , wherein the inner polarizing film 440 is disposed in each unit area 310 of the second substrate 300 and covers the light emitting element 400 .

Next, please refer to FIG. 3C to FIG. 3E in sequence. In this embodiment, a light shielding layer 350 , a color filter pattern 360 and an electrode layer 330 are sequentially formed on the second substrate 300 . The light shielding layer 350 is located around each unit area 310 , and the color filter pattern 360 and the electrode layer 330 are located in each unit area 310 . Wherein, the color filter pattern 360 makes the transflective liquid crystal display panel 100 suitable for displaying color pictures, and the light shielding layer 350 can improve the color purity of the display picture of the transflective liquid crystal display panel 100 . However, the present invention does not limit the types of the above-mentioned light-shielding layer 350 and the color filter pattern 360 , nor does it limit the formation order of the light-shielding layer 350 and the color filter pattern 360 . So far, the configuration of the components on the second substrate 300 has been roughly completed.

Please refer to FIG. 1A , FIG. 2F and FIG. 3E at the same time, provide the first substrate 200 in FIG. 2F and the second substrate 300 in FIG. 3E respectively, and then assemble the first substrate 200 and the second substrate 300 . Then, the lower polarizing film 240 is disposed on the surface of the first substrate 200 away from the liquid crystal layer 500 , and the upper polarizing film 340 is disposed on the surface of the second substrate 300 far away from the liquid crystal layer 500 . So far, the transflective liquid crystal display panel 100 of this embodiment has been roughly completed.

【Second Embodiment】

FIG. 4A shows a schematic partial cross-sectional view of a transflective liquid crystal display panel according to the second embodiment of the present invention, wherein FIG. 4A only shows a pixel region 710 and a unit region 810 corresponding to the pixel region 710 to facilitate description of this embodiment. example. 4B is a partial circuit diagram of the first substrate of the transflective liquid crystal display panel according to the second embodiment of the present invention. Please refer to FIG. 4A and FIG. 4B, the transflective liquid crystal display panel 600 of this embodiment is similar to the transflective liquid crystal display panel 100 of the first embodiment, wherein the same or similar symbols represent the same or similar components, which will not be repeated here. Each pixel area 710 of the transflective liquid crystal display panel 600 of this embodiment may further include a scan line 716 , a switch element 720 and a pixel electrode 722b, and an electrode layer 830b may be further disposed in each unit area 810 .

Based on the above, on the first substrate 700 of this embodiment, the scan lines 716 are substantially parallel to the scan lines 216 . In addition, the switch element 720 and the pixel electrode 722b are disposed in the penetration region 714, wherein the switch element 720 is electrically connected to the scan line 716, the data line 218 and the pixel electrode 722b, and the switch element 720 can be formed by the gate 720G, the gate insulating layer GI , a channel region 720C, a source 720S and a drain 720D. The gate 720G and the scan line 716 can be formed by the first conductive layer, and the source 720S and the drain 720D can be formed by the second conductive layer.

Please continue to refer to FIG. 4A and FIG. 4B , on the second substrate 800 of this embodiment, the electrode layer 830 a is disposed in the reflective region 312 and is disposed corresponding to the pixel electrode 722 a. On the other hand, the electrode layer 830b is disposed in the penetration region 814 and is disposed corresponding to the pixel electrode 722b. When there is a voltage difference between the pixel electrode 722b and the electrode layer 830b, the capacitive effect generated by the pixel electrode 722b, the liquid crystal layer 500 and the electrode layer 830b will form a liquid crystal capacitor. In addition, in order to improve the display quality of the transmissive region 714, a storage capacitor C _st ′ can be further configured to maintain the voltage difference between the pixel electrode 722b and the electrode layer 830b.

It can be seen from the above that the transflective liquid crystal display panel 600 of this embodiment also has the function of double-sided display. In detail, the light emitting element 400 of this embodiment is disposed in the penetrating region 814 , and it can be a white light emitting element. In addition, the light emitting component 400 provides the light source TL' required for displaying through the areas 714, 814, so that the viewer T' can watch the picture displayed by the transflective liquid crystal display panel 600. Therefore, the transmissive regions 714 and 814 of the transflective liquid crystal display panel 600 can display images without a backlight module. On the other hand, the external ambient light can provide the light source RL' required for displaying in the reflective regions 212, 312, so that the viewer R' can watch the picture displayed on the transflective liquid crystal display panel 600. Therefore, the reflective regions 212 and 312 of the transflective liquid crystal display panel 600 can display images without a backlight module.

However, the pixel electrode 722 a is electrically connected to the switch element 220 and disposed in the reflective region 212 , while the pixel electrode 722 b is electrically connected to the switch element 720 and disposed in the transmissive region 714 . Therefore, the scan line 216 and the scan line 716 can respectively drive the switch element 220 in the reflection area 212 and the switch element 720 in the transmission area 714, so that the images displayed in the reflection area 212, 312 and the transmission area 714, 814 can be Not the same picture.

To sum up, the transmissive area of the transflective liquid crystal display panel of the present invention is equipped with a light-emitting component, and its self-luminous characteristics can provide the light source required for displaying in the transmissive area to achieve the function of double-sided display. Compared with the problem of larger thickness caused by using two liquid crystal display panels to achieve the effect of double-sided display in the prior art, the display using the transflective liquid crystal display panel of the present invention is more light and thin. In addition, the transflective liquid crystal display panel of the present invention does not need to rely on the backlight module to provide light source, which can avoid energy waste caused by the light source of the backlight module only providing light source to the transmissive area. The semi-transmissive and semi-reflective liquid crystal display panel of the present invention can determine whether the display images on both sides of the panel are the same or different display images by using one switch component or two switch components with the relevant layout (layout), so that its application field is wider. It is widely applicable to various types of double-sided displays.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Those skilled in the art can make various corresponding modifications according to the present invention without departing from the spirit and essence of the present invention. Changes and deformations, but these corresponding changes and deformations should fall within the scope of protection of the appended claims of the present invention.

Claims (13)

1. A transflective liquid crystal display panel, characterized in that, comprising: A first substrate, the first substrate has a plurality of pixel areas, each pixel area has a reflective area and a transmissive area, and each pixel area includes: a first scan line and a data line; a first switch element, located in the reflective area, and electrically connected with the first scan line and the data line; and a pixel electrode located in the reflective area and the transmissive area; A second substrate, located opposite to the first substrate, wherein the second substrate has a plurality of unit areas corresponding to the pixel areas, and each unit area includes: a light-emitting component, which is disposed corresponding to the penetrating region of the first substrate; and a signal line electrically connected to the light emitting element; and A liquid crystal layer is located between the first substrate and the second substrate. 2. The transflective liquid crystal display panel as claimed in claim 1, further comprising an inner polarizing film disposed in each unit area of the second substrate and covering the light-emitting component. 3. The transflective liquid crystal display panel according to claim 1, wherein the light-emitting component comprises: a cathode layer; an anode layer; and An organic light emitting layer is located between the cathode layer and the anode layer. 4. The transflective liquid crystal display panel as claimed in claim 3, wherein the organic light-emitting layer is formed by stacking multiple layers of organic light-emitting materials. 5. A semi-transmissive and semi-reflective liquid crystal display panel, characterized in that it comprises: A first substrate, on which a plurality of pixel regions are arranged; A second substrate, the second substrate has a plurality of unit areas, and each unit area has a reflection area and a transmission area; a plurality of white light emitting components are respectively arranged in the penetrating region of the second substrate; and A liquid crystal layer is located between the first substrate and the second substrate. 6. The transflective liquid crystal display panel according to claim 5, further comprising an inner polarizing film and an electrode layer, the inner polarizing film is arranged on the second substrate and covers the On the white light emitting component, the electrode layer is arranged on the second substrate. 7. The transflective liquid crystal display panel according to claim 5, wherein each pixel area comprises: a scan line and a data line; a switch component, which is electrically connected with the scan line and the data line; and A pixel electrode is electrically connected with the switch component. 8. The transflective liquid crystal display panel according to claim 5, further comprising a first electrode layer and a second electrode layer disposed on the second substrate, and the first electrode layer is located in the reflective region, and the second electrode layer is located in the transmissive region. 9. The transflective liquid crystal display panel according to claim 5, wherein each pixel area comprises: a first scan line and a data line; a first switch component, correspondingly arranged in the reflective area of the second substrate, and electrically connected with the first scan line and the data line; a first pixel electrode, correspondingly arranged in the reflective area of the second substrate, and electrically connected with the first switch component; a second scan line, which is arranged parallel to the first scan line; a second switch component, correspondingly arranged in the penetration region of the second substrate, and electrically connected with the second scan line and the data line; A second pixel electrode is correspondingly disposed in the penetration region of the second substrate, and is electrically connected with the second switch component. 10. The transflective liquid crystal display panel according to claim 5, wherein there is a first gap between the first substrate and the second substrate in the reflective area, and the transmissive There is a second gap between the first substrate and the second substrate in the region, and the second gap is twice the first gap. 11. The transflective liquid crystal display panel according to claim 5, further comprising a flat layer and a reflective layer, the flat layer is disposed on the first substrate and covers the pixel areas, The partial surface has a plurality of raised patterns, and the reflective layer covers the partial surface of the flat layer. 12. The transflective liquid crystal display panel according to claim 5, wherein the white light-emitting component comprises: a cathode layer; an anode layer; and An organic light emitting layer is located between the cathode layer and the anode layer. 13. The transflective liquid crystal display panel according to claim 12, wherein the organic light-emitting layer comprises [octahydroxyaluminum: rubrene], triarylamine derivatives or 8-hydroxyquinoline aluminum.

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