CN215264292U - Liquid crystal display panel and display device - Google Patents
Liquid crystal display panel and display device Download PDFInfo
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- CN215264292U CN215264292U CN202121453377.4U CN202121453377U CN215264292U CN 215264292 U CN215264292 U CN 215264292U CN 202121453377 U CN202121453377 U CN 202121453377U CN 215264292 U CN215264292 U CN 215264292U
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 173
- 239000011347 resin Substances 0.000 claims abstract description 13
- 229920005989 resin Polymers 0.000 claims abstract description 11
- 239000000758 substrate Substances 0.000 claims description 49
- 239000011521 glass Substances 0.000 claims description 21
- 230000000694 effects Effects 0.000 abstract description 22
- 230000000007 visual effect Effects 0.000 abstract description 10
- 230000005540 biological transmission Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 239000011342 resin composition Substances 0.000 description 6
- 230000010287 polarization Effects 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 101100224481 Dictyostelium discoideum pole gene Proteins 0.000 description 1
- 101150046160 POL1 gene Proteins 0.000 description 1
- 101150110488 POL2 gene Proteins 0.000 description 1
- 101100117436 Thermus aquaticus polA gene Proteins 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
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- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 244000144985 peep Species 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
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Abstract
The utility model discloses a liquid crystal display panel and display device, this panel setting is in backlight unit's light-emitting side, and includes: a liquid crystal display module; the dimming box is arranged on one side of the liquid crystal display module close to the backlight module; the brightness enhancement film is arranged between the dimming box and the backlight module, wherein the dimming box comprises: a first electrode receiving a first control voltage; a second electrode receiving a second control voltage; a first liquid crystal layer disposed between the first electrode and the second electrode; the light modulation plate comprises a plurality of lenses which are formed by resin and arranged in parallel, and the light modulation plate is arranged on one side of the second electrode close to the first electrode. The utility model discloses can promote display effect and luminance under the wide visual angle mode to reduce the consumption, simultaneously, through the parameter of liquid crystal in the adjustment light modulation box and the liquid crystal inclination under the narrow visual angle, the narrow visual angle effect of promotion that also can step forward.
Description
Technical Field
The utility model relates to a show technical field, concretely relates to liquid crystal display panel and display device.
Background
With the increased use of portable computing devices, such as smartphones, laptops, tablets, etc., having Liquid Crystal Displays (LCDs), users have become concerned with other individuals being able to read sensitive or private information. Thus, many portable computing devices can operate in a Narrow Viewing Angle mode (also known as private mode, NVA), where information is only largely visible only to on-axis viewers, and in a Wide Viewing Angle mode (also known as public mode Wide Viewing Angle, WVA), where information is typically visible to off-axis viewers at wider Viewing angles within the capabilities of the device. Such devices are typically switchable between a narrow View mode and a wide narrow View mode, i.e., Hybrid View Angle (HVA) dimming can be achieved.
Fig. 1 is a schematic structural view showing a conventional liquid crystal display panel, and as shown in fig. 1, the conventional liquid crystal display device includes: a liquid crystal display module 100, a backlight module (BL) 200, and a Light box 300. The liquid crystal display module 100 and the light adjusting box 300 are components of a liquid crystal display panel. The liquid crystal display module 100 includes an upper polarizer (POL1)110, a color filter substrate (CF)120, a second liquid crystal Layer (LC)130, an array substrate (TFT)140, and a lower polarizer (POL2)150, which are sequentially arranged from top to bottom. The dimming box 300 includes a dimming module (Switch cell)310 and a privacy film (Louver) 320. Fig. 2 shows a schematic structural diagram of the light modulation box in fig. 1, and as shown in fig. 2, the light modulation box 300 further includes a first glass substrate 311, a first electrode 312, a first liquid crystal layer 313, a light modulation plate 134, a second electrode layer 315, a second glass substrate 316, and a privacy film 320, which are sequentially arranged from top to bottom.
In the conventional HVA dimming technology, referring to fig. 2, a light modulation plate 314 having a Lens (Lens) microstructure is formed by resin imprinting, and a voltage is applied to a whole surface of a first electrode 312 and/or a second electrode 315 to control a liquid crystal orientation of a first liquid crystal layer, so that a light path control function is realized and an effect of switching between a wide viewing angle and a narrow viewing angle is achieved.
However, the HVA dimming technique described above has low brightness and large power consumption in the wide viewing angle mode; meanwhile, in order to maintain the conventional Tr (Tr is the transmittance of the liquid crystal display panel), wide viewing angle effect and POL (Polarizer) together, the brightness at the oblique viewing angles (e.g., at the azimuth angles of 45 °, 135 °, 225 ° and 315 °) in the wide viewing angle mode needs to be sacrificed, and the two are not compatible.
Therefore, there is a need to provide an improved technical solution to overcome the above technical problems in the prior art.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a liquid crystal display panel and display device can promote display effect and luminance under the wide visual angle mode to reduce the consumption, simultaneously, through the parameter of liquid crystal in the adjustment light modulation box and the liquid crystal inclination under the narrow visual angle, the narrow visual angle effect of promotion that also can be further.
According to a first aspect of the present disclosure, a liquid crystal display panel is provided, which is disposed on a light emitting side of a backlight module, the liquid crystal display panel including:
a liquid crystal display module;
the dimming box is arranged on one side of the liquid crystal display module close to the backlight module;
a brightness enhancement film arranged between the light modulation box and the backlight module,
wherein, the light modulation box includes:
a first electrode receiving a first control voltage;
a second electrode receiving a second control voltage;
a first liquid crystal layer disposed between the first electrode and the second electrode;
and the light modulation plate comprises a plurality of lenses which are formed by resin and arranged in parallel, and is arranged on one side of the second electrode close to the first electrode.
Optionally, the light modulation box further comprises:
the first glass substrate is arranged on one side, away from the second electrode, of the first electrode;
the second glass substrate is arranged on one side, away from the first electrode, of the second electrode;
and the peep-proof film is arranged on one side of the second glass substrate, which is deviated from the first glass substrate.
Optionally, the brightness enhancement film is a reflective polarizing film attached to a side of the privacy film facing away from the second glass substrate.
Optionally, the brightness enhancement film is a reflection-type brightness enhancement film, and the reflection-type brightness enhancement film is attached to the light-emitting side of the backlight module.
Optionally, the liquid crystal display panel further includes:
and the control module is connected with the first electrode and the second electrode and outputs the first control voltage and the second control voltage to control the liquid crystal deflection of the first liquid crystal layer.
Optionally, in a wide viewing angle mode, a long axis refractive index of liquid crystals of the first liquid crystal layer is greater than a refractive index of the resin;
in the narrow viewing angle mode, the long axis refractive index n of the liquid crystal of the first liquid crystal layereThe product of k and k is equal to the refractive index of the resin, wherein k is 0.87 ± 0.05.
Alternatively, in the narrow viewing angle mode, the tilt angle of the liquid crystals of the first liquid crystal layer is equal to 60 ° ± 10 °.
Optionally, the liquid crystal display module includes:
the array substrate and the color film substrate are oppositely arranged;
the second liquid crystal layer is arranged between the array substrate and the color film substrate;
the upper polarizing plate is arranged on one side of the color film substrate, which is deviated from the array substrate;
and the lower polarizing plate is arranged on one side of the array substrate, which is deviated from the color film substrate.
According to a second aspect of the present disclosure, there is provided a display device including: the backlight module comprises a backlight source, and the liquid crystal display panel is arranged on the light emergent side of the backlight source.
The utility model has the advantages that: the utility model discloses a liquid crystal display panel and display device has increased one deck brightness enhancement film between current backlight unit and the box of adjusting luminance, can with the continuous reflection of the S ripples of the axle direction quadrature that sees through of the lower polarizing plate of liquid crystal display panel change into with the parallel P ripples of the axle direction that sees through of lower polarizing plate, carry out continuous reuse to the light source to the luminance of the light that has strengthened transmission to liquid crystal display module assembly in all directions has improved the demonstration luminance and the display effect under the wide visual angle, and the low power dissipation. Meanwhile, the peep-proof film is further arranged in the dimming box to absorb light transmitted to the liquid crystal display module in the left-right direction, so that the display effect of the panel in the narrow visual angle mode is not influenced.
On the other hand, the display effect of the panel in the narrow viewing angle mode can be further improved by adjusting the parameters (such as refractive index) and the inclination angle (or inclination angle) of the liquid crystal in the light modulation box in the narrow viewing angle mode.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.
Drawings
Fig. 1 is a schematic view showing a structure of a conventional liquid crystal display device;
FIG. 2 shows a schematic diagram of the construction of the light box of FIG. 1;
fig. 3 illustrates a schematic structural diagram of a liquid crystal display device provided according to an embodiment of the present disclosure;
fig. 4 illustrates optical path diagrams in a wide viewing angle mode and a narrow viewing angle mode in a liquid crystal display panel provided according to an embodiment of the present disclosure;
FIG. 5 shows an equivalent structure diagram of the light box of FIG. 4;
fig. 6 illustrates a performance diagram of a liquid crystal display panel provided according to an embodiment of the present disclosure in a wide viewing angle mode and a narrow viewing angle mode;
fig. 7 is a graph showing a comparison result of performance of the conventional liquid crystal display panel in the wide viewing angle mode at the azimuth angles of 180 ° and 0 ° with performance of the liquid crystal display panel provided according to the embodiment of the present disclosure at the azimuth angles of 180 ° and 0 °;
fig. 8 is a graph showing a comparison result of performance of the conventional liquid crystal display panel at the azimuthal angles of 270 ° and 90 ° in the wide viewing angle mode with performance of the liquid crystal display panel provided according to an embodiment of the present disclosure at the azimuthal angles of 270 ° and 90 °;
fig. 9 is a graph showing a comparison result of performance of the conventional liquid crystal display panel at azimuth angles of 225 ° and 45 ° in the wide viewing angle mode and performance of the liquid crystal display panel provided according to an embodiment of the present disclosure at azimuth angles of 225 ° and 45 °;
fig. 10 is a graph showing a comparison result of performance of the conventional liquid crystal display panel at azimuth angles of 315 ° and 135 ° in the wide viewing angle mode with performance of the liquid crystal display panel provided according to an embodiment of the present disclosure at azimuth angles of 315 ° and 135 °;
fig. 11 is a graph showing a comparison result of performance of the conventional liquid crystal display panel configuration at azimuth angles of 180 ° and 0 ° in the narrow viewing angle mode with performance of the liquid crystal display panel configuration at azimuth angles of 180 ° and 0 ° provided according to an embodiment of the present disclosure;
fig. 12 is a graph showing a comparison result of performance of the conventional liquid crystal display panel at azimuthal angles of 270 ° and 90 ° in the narrow viewing angle mode and performance of the liquid crystal display panel provided according to an embodiment of the present disclosure at azimuthal angles of 270 ° and 90 °;
fig. 13 is a graph showing a comparison result of performance of the conventional liquid crystal display panel at azimuth angles of 225 ° and 45 ° in the narrow viewing angle mode and performance of the liquid crystal display panel provided according to an embodiment of the present disclosure at azimuth angles of 225 ° and 45 °;
fig. 14 is a graph showing the results of comparing the performance of the conventional liquid crystal display panel at the azimuth angles of 315 ° and 135 ° in the narrow viewing angle mode with the performance of the liquid crystal display panel provided according to the embodiment of the present disclosure at the azimuth angles of 315 ° and 135 °.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
The present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 3, the liquid crystal display device disclosed in the present invention includes: a liquid crystal display panel and a backlight module 200. The liquid crystal display panel is disposed on the light-emitting side of the backlight module 200.
In this embodiment, the lcd panel includes an lcd module 100, a light-adjusting box 300 and a brightness enhancement film 400. The light adjusting box 300 is disposed on a side of the liquid crystal display module 100 close to the backlight module 200; the brightness enhancement film 400 is disposed between the light modulation box 300 and the backlight module 200.
The liquid crystal display module 100 includes: the array substrate 140 and the color film substrate 120 are oppositely arranged; a second liquid crystal layer 130 disposed between the array substrate 120 and the color filter substrate 140; an upper polarizer 110 disposed on a side of the color film substrate 120 away from the array substrate 140; and a lower polarizer 150 disposed on a side of the array substrate 140 facing away from the color filter substrate 120. The specific structures of the color filter substrate 120 and the array substrate 140 can be understood by referring to the prior art, and will not be described in detail herein.
In this embodiment, the grating direction of the upper polarizer 110 is along a first direction, the grating direction of the lower polarizer 150 is along a second direction, and the first direction is perpendicular to the second direction. For example, a direction parallel to a short side of the liquid crystal display panel may be set as the second direction, and a direction parallel to a long side of the liquid crystal display panel may be set as the first direction.
Optionally, in this embodiment, the liquid crystal molecules in the second liquid crystal layer 130 may be negative liquid crystal molecules, and may also be positive liquid crystal molecules, which is not limited in this disclosure.
The light modulation box 300 includes a light modulation module 310 and a privacy film 320, and the light modulation module 310 is disposed between the privacy film 320 and the liquid crystal display module 100. It should be understood that, although the components of the liquid crystal display device are shown separately in fig. 1, the liquid crystal display module 100, the light modulation module 310, the privacy film 320, the brightness enhancement film 400 and the backlight module 200 may be attached together by an Adhesive (e.g., Optical Clear Adhesive (OCA)) or the like.
Further, the privacy film 320 includes transmission portions and light shielding portions that are alternately arranged, and both the transmission portions and the light shielding portions are in a band-shaped structure. The privacy film 320 can absorb incident light at a certain angle or more incident from the backlight module 200 to the light-shielding portion of the privacy film 320 and prevent the incident light from transmitting therethrough, for example, when the light-transmitting portion and the light-shielding portion of the privacy film 320 are alternately arranged in parallel in the left-right direction, the light-collecting effect of the incident light in the left-right direction can be achieved, which is helpful for achieving the narrow viewing angle effect of the display panel.
Referring to fig. 4, in the present disclosure, the light modulation box 300 further includes: a first glass substrate 311, a first electrode 312, a first liquid crystal layer 313, a light modulation plate 314, a second electrode 315, a second glass substrate 316, and a privacy film 320. Wherein, the first electrode 312 and the second electrode 315 are oppositely arranged; the first glass substrate 311 is disposed on a side of the first electrode 312 away from the second electrode 315; the second glass substrate 316 is disposed on a side of the second electrode 315 facing away from the first electrode 312; the first liquid crystal layer 313 is disposed between the first electrode 312 and the second electrode 315; the light modulation plate 314 is disposed on one side of the second electrode 315 close to the first electrode 312; the peep-proof film 320 is disposed on a side of the second glass substrate 316 away from the first glass substrate 311. In one embodiment of the present disclosure, the brightness enhancement Film 400 may be optionally a reflective Polarizer Film (APF) attached to the side of the privacy Film 320 facing away from the second glass substrate 316.
In another embodiment of the present disclosure, the Brightness Enhancement Film 400 can also be a Dual Brightness Enhancement Film (DBEF) attached to the light-emitting side of the backlight 200.
In the present disclosure, the backlight assembly 200 includes a light source 210, a light guide plate 220, and a prism 230.
As shown in fig. 4, in the present disclosure, the brightness enhancement film 400 added between the light adjusting box 300 and the backlight module 200 can continuously reflect the S-wave orthogonal to the transmission axis direction of the lower polarizer 150 of the liquid crystal display panel and convert the S-wave into the P-wave parallel to the transmission axis direction of the lower polarizer 150, so as to realize continuous recycling of the light source, thereby enhancing the brightness of the light transmitted to the liquid crystal display module 100 in each direction, improving the display brightness and the display effect of the liquid crystal display panel at a wide viewing angle, and reducing power consumption. Meanwhile, when the brightness of the light transmitted to the liquid crystal display module 100 in each direction is enhanced, the peep-proof film 320 arranged above the brightness enhancement film 400 can absorb the light output by the brightness enhancement film 400 in the left and right directions, so that the brightness enhancement film 400 does not affect the display effect of the liquid crystal display panel in the narrow viewing angle mode, and the narrow viewing angle display effect of the liquid crystal display panel is ensured.
Further, the brightness enhancement film 400(APF/DBEF) used in the present disclosure has a polarization characteristic that allows polarized light in a specific direction to pass through, and further adjusts a parameter of the liquid crystal (for example, a long-axis refractive index of the liquid crystal, denoted as n) of the first liquid crystal layer 313 designed by the polarization characteristice) The liquid crystal display panel can achieve better peep-proof effect in a narrow viewing angle mode. And may be understood with specific reference to the following description.
As can be seen from the foregoing, the light-adjusting box 300 is disposed between the lower polarizer 150 and the brightness enhancement film 400 of the lcd module 100, and further, as shown in fig. 5, the light-adjusting box 300 can be equivalently regarded as similar to the structure of the lcd module 100, in which case, the first electrode 312 of the light-adjusting box 300 can be equivalently regarded as a color film electrode, and the second electrode 315 of the light-adjusting box 300 can be equivalently regarded as an array electrode. Further, the light modulation box 400 can be understood with reference to the liquid crystal display module 100.
Specifically, the first electrode 312 in the light modulation box 300 receives a first control voltage, the second electrode 315 receives a second control voltage, and a driving electric field having a certain voltage difference (denoted as Δ V herein) can be formed between the first electrode 312 and the second electrode 315. When the first control voltage received by the first electrode 312 and/or the second control voltage received by the second electrode 315 are/is adjusted, the liquid crystal director of the first liquid crystal layer 313 can be adjusted. In this embodiment, the lcd panel further includes a control module, which is respectively connected to the first electrode 312 and the second electrode 315, and is used for outputting a first control voltage to the first electrode 312 and outputting a second control voltage to the second electrode 315. The control module may further adjust the value of the output first control voltage and/or second control voltage according to the regulation instruction, so as to adjust the voltage difference Δ V between the first electrode 312 and the second electrode 315, and finally drive the liquid crystal of the first liquid crystal layer 313 to deflect.
Further, the first electrode 312 and the second electrode 315 are both transparent electrodes.
In this embodiment, after the light provided by the backlight module 200 enters the second glass substrate 316 of the light adjusting box 300, the light enters the liquid crystal molecules (herein, simply referred to as liquid crystal) in the first liquid crystal layer 313 through the lens microstructures of the light adjusting plate 314, and is refracted by the liquid crystal of the first liquid crystal layer 313, and then exits to the liquid crystal display module 100 through the first glass substrate 311. As can be seen from the foregoing, the control module adjusts the voltage difference Δ V between the first electrode 312 and the second electrode 315, so that the liquid crystal can be tilted (or deflected) at any angle, and the long-axis refractive indexes (denoted as n in this document) corresponding to the liquid crystals with different tilt angles are based on the special structure of the liquid crystale) In contrast, the adjustment of the voltage difference Δ V between the first electrode 312 and the second electrode 315 by the control module can realize the long-axis refractive index n of the liquid crystal in the first liquid crystal layer 313eAnd (4) adjusting.
As shown in FIGS. 4 and 5, in the present embodiment, when the liquid crystal is laid down, the refractive index n of the long axis of the liquid crystal iseIs larger than the refractive index (denoted as n herein) of the resin constituting the lens microstructure in the light modulation plate 314Resin composition) And a refractive index (denoted as n herein) greater than the short axis of the liquid crystalo) I.e. ne＞nResin composition＞noAt this time, the incident light refracted by the liquid crystal is deflected in the direction and then scattered into the liquid crystal display module 100, so that the liquid crystal display module can be manufacturedAnd displaying the green liquid crystal display panel at a wide viewing angle. When the included angle between the liquid crystal and the horizontal direction is about 60 degrees, the long axis refractive index n of the liquid crystaleThe product of k is equal to the refractive index n of the resinResin compositionAnd short axis refractive index n of liquid crystaloI.e. ne*k＝nResin composition＝noAt this time, since the direction of the incident light refracted by the liquid crystal is hardly deflected and is collimated and incident on the liquid crystal display module 100, the narrow viewing angle display of the liquid crystal display panel can be performed, where k is 0.87 ± 0.05.
Further, when the long axis refractive index n of the liquid crystal is largeeGreater than the refractive index n of the resin constituting the lens microstructure in the light modulation plate 314Resin compositionWhen the liquid crystal molecules in the first liquid crystal layer 313 are arranged in parallel; when the long axis refractive index n of the liquid crystaleThe product of k is larger than the refractive index n of the resinResin compositionIn this case, the liquid crystal molecules in the first liquid crystal layer 313 are vertically arranged, and an included angle between each liquid crystal molecule and the horizontal direction, i.e., a liquid crystal tilt angle (herein, α), is equal to 60 ° ± 10 °. That is, when the liquid crystal molecules in the first liquid crystal layer 313 are arranged in parallel by adjusting the voltage difference Δ V between the first electrode 312 and the second electrode 315, the wide viewing angle display of the liquid crystal display panel can be realized. And when the liquid crystal molecules in the first liquid crystal layer 313 are deflected by 60 ° ± 10 ° (preferably 60 °) by adjusting the voltage difference Δ V between the first electrode 312 and the second electrode 315, narrow viewing angle display of the liquid crystal display panel can be achieved.
Further, in the present embodiment, the light modulation plate 314 includes a plurality of lenses formed of resin and arranged in parallel, and the arrangement direction of the plurality of lenses is the same as the arrangement direction of the transmission portion and the light shielding portion in the privacy film 320. Thus, the light transmittance can be improved.
Based on the foregoing description, in the present embodiment, the polarization characteristic of the brightness enhancement film 400 is utilized, and the retardation (n) of the incident light of the backlight module 200 in the light-adjusting box 300 is matched with the downward polarization of the liquid crystal and the 90 ° alignment of the IPSe-no) 800, and the control module applies control voltages to the first electrode 312 and the second electrode 315 such that the liquid crystal tilt angle α of the first liquid crystal layer 313 is within 50 ° to 70 °The wide viewing angle effect and the narrow viewing angle effect as shown in fig. 6 can be achieved.
The lcd panel structure in the present disclosure has a display effect equivalent to that of the conventional lcd panel structure in the narrow viewing angle mode, but the display effect in the wide viewing angle mode is significantly improved, for example, the display brightness of the lcd panel structure in the wide viewing angle mode in the present embodiment can be improved by 13% compared to the conventional structure.
Fig. 7 to 10 are graphs showing results of comparing the performance of the conventional liquid crystal display panel configuration with the performance of the liquid crystal display panel configuration provided according to the embodiment of the present disclosure at different azimuth angles in the wide viewing angle mode, respectively. As can be seen from fig. 7 to 10, in the wide viewing angle mode, the display performance of the lcd panel structure of the present disclosure at the left and right viewing angles (corresponding to the 0 ° and 180 ° azimuth angles) is slightly better than that of the conventional structure, and the display performance at other azimuth angles is greatly improved compared to that of the conventional structure.
Fig. 11 to 14 are graphs showing results of comparing the performance of the conventional liquid crystal display panel configuration with the performance of the liquid crystal display panel configuration provided according to the embodiment of the present disclosure at different azimuth angles in the narrow viewing angle mode, respectively. As can be seen from fig. 11 to 14, in the narrow viewing angle mode, the display performance of the liquid crystal display panel architecture of the present disclosure is better than that of the conventional architecture within 30 ° of the polar angle of the left and right viewing angles, and the display performance at the large viewing angle is equivalent to that of the conventional architecture. That is, the liquid crystal display panel architecture in the present disclosure can achieve left and right peep prevention in the narrow viewing angle mode.
To sum up, the utility model discloses backlight unit and the box of adjusting luminance between have increased the one deck brightness enhancement film, can realize the dual of linear polarization receipts light and refracting index and adjust luminance, promptly on the one hand, can with the continuous reflection of the S ripples of the transmission axis direction quadrature of the lower polarized light board of liquid crystal display panel change into with the parallel P ripples of the transmission axis direction of lower polarized light board, carry out continuous reuse to the light source, thereby strengthened the luminance of the light of transmission to liquid crystal display module in all directions, improved the display brightness and the display effect under the wide visual angle, and the low power dissipation. Meanwhile, the peep-proof film is further arranged in the dimming box to absorb light transmitted to the liquid crystal display module in the left-right direction, so that the display effect of the panel in the narrow visual angle mode is not influenced. On the other hand, the display effect of the panel in the narrow viewing angle mode can be further improved by adjusting the parameters (such as refractive index) and the inclination angle (or inclination angle) of the liquid crystal in the light modulation box in the narrow viewing angle mode.
Finally, it should be noted that: it should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications may be made without departing from the scope of the present invention.
Claims (9)
1. The utility model provides a liquid crystal display panel, sets up the light-emitting side at backlight unit, its characterized in that, liquid crystal display panel includes:
a liquid crystal display module;
the dimming box is arranged on one side of the liquid crystal display module close to the backlight module;
a brightness enhancement film arranged between the light modulation box and the backlight module,
wherein, the light modulation box includes:
a first electrode receiving a first control voltage;
a second electrode receiving a second control voltage;
a first liquid crystal layer disposed between the first electrode and the second electrode;
and the light modulation plate comprises a plurality of lenses which are formed by resin and arranged in parallel, and is arranged on one side of the second electrode close to the first electrode.
2. The liquid crystal display panel according to claim 1, wherein the dimming cell further comprises:
the first glass substrate is arranged on one side, away from the second electrode, of the first electrode;
the second glass substrate is arranged on one side, away from the first electrode, of the second electrode;
and the peep-proof film is arranged on one side of the second glass substrate, which is deviated from the first glass substrate.
3. The lcd panel of claim 2, wherein the brightness enhancement film is a reflective polarizer film attached to a side of the privacy film facing away from the second glass substrate.
4. The liquid crystal display panel of claim 2, wherein the brightness enhancement film is a reflective brightness enhancement film, and the reflective brightness enhancement film is attached to the light exit side of the backlight module.
5. The liquid crystal display panel according to claim 1, further comprising:
and the control module is connected with the first electrode and the second electrode and outputs the first control voltage and the second control voltage to control the liquid crystal deflection of the first liquid crystal layer.
6. The liquid crystal display panel according to claim 5, wherein in a wide viewing angle mode, a long axis refractive index of liquid crystal of the first liquid crystal layer is larger than a refractive index of resin;
in the narrow viewing angle mode, the product of the long-axis refractive index of the liquid crystal of the first liquid crystal layer and k is equal to the refractive index of the resin, wherein k is 0.87 +/-0.05.
7. The liquid crystal display panel according to claim 6, wherein the tilt angle of the liquid crystal of the first liquid crystal layer is equal to 60 ° ± 10 ° in the narrow viewing angle mode.
8. The liquid crystal display panel according to claim 1, wherein the liquid crystal display module comprises:
the array substrate and the color film substrate are oppositely arranged;
the second liquid crystal layer is arranged between the array substrate and the color film substrate;
the upper polarizing plate is arranged on one side of the color film substrate, which is deviated from the array substrate;
and the lower polarizing plate is arranged on one side of the array substrate, which is deviated from the color film substrate.
9. A liquid crystal display device, comprising: backlight module and liquid crystal display panel according to any of claims 1 to 8, the liquid crystal display panel being arranged at the light exit side of the backlight module.
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| CN202121453377.4U CN215264292U (en) | 2021-06-29 | 2021-06-29 | Liquid crystal display panel and display device |
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| CN202121453377.4U CN215264292U (en) | 2021-06-29 | 2021-06-29 | Liquid crystal display panel and display device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115016156A (en) * | 2022-06-28 | 2022-09-06 | 昆山龙腾光电股份有限公司 | Display device with switchable wide and narrow viewing angles and driving method |
| CN116184700A (en) * | 2022-12-13 | 2023-05-30 | 厦门天马微电子有限公司 | Display module and display device |
| CN116736583A (en) * | 2023-06-06 | 2023-09-12 | 惠州市德赛西威汽车电子股份有限公司 | Vehicle-mounted display device, peep-proof method and automobile |
| WO2023184341A1 (en) * | 2022-03-31 | 2023-10-05 | 京东方科技集团股份有限公司 | Display device |
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2021
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| WO2023184341A1 (en) * | 2022-03-31 | 2023-10-05 | 京东方科技集团股份有限公司 | Display device |
| CN115016156A (en) * | 2022-06-28 | 2022-09-06 | 昆山龙腾光电股份有限公司 | Display device with switchable wide and narrow viewing angles and driving method |
| CN116184700A (en) * | 2022-12-13 | 2023-05-30 | 厦门天马微电子有限公司 | Display module and display device |
| CN116736583A (en) * | 2023-06-06 | 2023-09-12 | 惠州市德赛西威汽车电子股份有限公司 | Vehicle-mounted display device, peep-proof method and automobile |
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