CN103969899A - Semi-transmission and semi-reflection liquid crystal display panel and liquid crystal display - Google Patents
Semi-transmission and semi-reflection liquid crystal display panel and liquid crystal display Download PDFInfo
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Abstract
The invention provides a semi-transmission and semi-reflection liquid crystal display panel and a liquid crystal display. The semi-transmission and semi-reflection liquid crystal display panel comprises a first substrate, a second substrate arranged opposite to the first substrate and a liquid crystal layer arranged between the first substrate and the second substrate, wherein the first substrate and the second substrate comprise a plurality of sub-pixels, and each sub-pixel comprises a reflection region and a transmission region; a common electrode is arranged on the first substrate and corresponds to the whole transmission regions and the whole reflection regions; reflective electrodes are arranged on the second substrate, correspond to the reflective regions and serve as pixel electrodes. According to the semi-transmission and semi-reflection liquid crystal display panel, a novel electrode structure is adopted, and the semi-transmission and semi-reflection display effect is achieved while the manufacturing process is simplified.
Description
Technical field
The present invention relates to technical field of liquid crystal display, relate in particular to a kind of semi-transparent semi-reflecting display panels and liquid crystal indicator.
Background technology
Display panels is generally become box-like with array base palte by color membrane substrates, in the space between two substrates, is packaged with liquid crystal layer.Because liquid crystal molecule self is not luminous, so needing light source, display shows image, according to the difference that adopts light source type, liquid crystal display can be divided into transmission-type, reflective and Transflective.
Wherein, the advantage of transmissive type liquid crystal display is under dark environment, to show bright image, but shortcoming is permeable light, to account for the ratio of backlight emission of light less, and backlight utilization factor is not high, just need to increase substantially the brightness of backlight for improving display brightness, therefore energy consumption is high.
The advantage of reflective liquid-crystal display is to utilize sunlight or front light-source as light source, and power consumption is relatively low, but shortcoming is cannot in the dark show image due to the dependence to external light source.
And transflective liquid crystal display has the advantage of transmission-type and reflection type liquid crystal panel concurrently, both can under dark environment, show bright image, in indoor use, also can be in outdoor application, therefore, it is widely used in the display device of Portable movable electronic product, as mobile phone, digital camera, palm PC, the mobile products such as GPRS.
Summary of the invention
In view of this, the invention provides a kind of semi-transparent semi-reflecting display panels and liquid crystal indicator, adopt new electrode structure, in realizing semi-transparent semi-reflecting display effect, simplified manufacture craft.
For achieving the above object, the invention provides a kind of semi-transparent semi-reflecting display panels, comprise first substrate, and the second substrate that is oppositely arranged of described first substrate and be arranged at described first substrate and described second substrate between liquid crystal layer; Wherein, described first substrate and described second substrate comprise multiple sub-pixels, and described in each, sub-pixel comprises echo area and transmission area; It is characterized in that:
On described first substrate, corresponding whole described transmission area and described echo area are provided with public electrode;
On described second substrate, be provided with the reflecting electrode as pixel electrode simultaneously corresponding to the part of described echo area.
Wherein, described echo area and described transmission area transpostion interval arrange.
Wherein, described reflecting electrode adopts opaque metal material to make.
Wherein, the liquid crystal cell of described transmission area and described echo area is thick equates.
Wherein, described liquid crystal layer is positivity liquid crystal layer.
Wherein, described first substrate comprises:
The first underlay substrate;
Be formed at a side of the close described second substrate of described the first underlay substrate, and the described public electrode arranging corresponding to whole described echo area and described transmission area;
Be formed at a side of the close described second substrate of described the first underlay substrate, and the first oriented layer arranging corresponding to whole described echo area and described transmission area;
Be formed at the side away from described second substrate of described the first underlay substrate, and the first polaroid arranging corresponding to whole described echo area and transmission area;
Described second substrate comprises:
The second underlay substrate;
Be formed at a side of the close described first substrate of described the second underlay substrate, and the described reflecting electrode arranging corresponding to described echo area;
Be formed at a side of the close described first substrate of described the second underlay substrate, and the second oriented layer arranging corresponding to whole described echo area and described transmission area;
Be formed at the side away from described first substrate of described the second underlay substrate, and the second polaroid arranging corresponding to whole described echo area and transmission area.
Wherein, described liquid crystal layer is blue phase liquid crystal layer.
Wherein, described first substrate comprises:
The first underlay substrate;
Be formed at a side of the close described second substrate of described the first underlay substrate, and the described public electrode arranging corresponding to whole described echo area and described transmission area;
Be formed at the side away from described second substrate of described the first underlay substrate, and the first polaroid arranging corresponding to whole described echo area and transmission area;
Described second substrate comprises:
The second underlay substrate;
Be formed at a side of the close described first substrate of described the second underlay substrate, and the described reflecting electrode arranging corresponding to described echo area;
Be formed at the side away from described first substrate of described the second underlay substrate, and the second polaroid arranging corresponding to whole described echo area and transmission area.
Wherein, described first substrate is color membrane substrates, and described second substrate is array base palte.
The present invention also provides a kind of liquid crystal indicator, comprises above-mentioned semi-transparent semi-reflecting display panels.
The beneficial effect of the technique scheme of invention is as follows:
By new electrode structural designs, in realizing semi-transparent semi-reflecting display effect, because the reflecting electrode of echo area can use as pixel electrode simultaneously, thereby simplify manufacture craft.
Brief description of the drawings
Fig. 1 is the structural representation of the semi-transparent semi-reflecting positivity display panels of the embodiment of the present invention while not powering up.
Fig. 2 is the structural representation of the semi-transparent semi-reflecting display panels in Fig. 1 while powering up.
Fig. 3 is the structural representation of the semi-transparent semi-reflecting blue-phase liquid crystal display panel of the embodiment of the present invention while not powering up.
Fig. 4 is the structural representation of the semi-transparent semi-reflecting blue-phase liquid crystal display panel in Fig. 3 while powering up.
Embodiment
For making the technical problem to be solved in the present invention, technical scheme and advantage clearer, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
As shown in Figures 1 to 4, the embodiment of the present invention provides a kind of semi-transparent semi-reflecting display panels, comprises first substrate 100, and the second substrate 200 that is oppositely arranged of described first substrate 100 and be arranged at the liquid crystal layer 300 between described first substrate 100 and described second substrate 200.
Wherein, described first substrate 100 and described second substrate 200 comprise multiple sub-pixels, and described in each, sub-pixel comprises echo area and transmission area.Described echo area and described transmission area transpostion interval arrange.
On described first substrate 100, corresponding whole described transmission area and described echo area are provided with public electrode 101.
On described second substrate 200, be provided with the reflecting electrode 201 as pixel electrode simultaneously corresponding to described echo area.
In above-described embodiment, by new electrode structural designs, in realizing semi-transparent semi-reflecting display effect, because the reflecting electrode 201 of echo area can use as pixel electrode simultaneously, thereby simplify manufacture craft.
Particularly, be also formed with data line and grid line (scheming not shown) that many transverse and longitudinals are intersected on described second substrate 200, data line and grid line enclose and form the sub-pixel that matrix form is arranged.In each sub-pixel, be provided with TFT switch (scheming not shown), wherein, TFT switch comprises gate electrode, source electrode, drain electrode and active layer, gate electrode connects grid line, source electrode connection data line, drain electrode connects described reflecting electrode 201, and active layer is formed between source/drain electrode and gate electrode.Thereby described reflecting electrode 201 both can be used as reflection horizon and used, can be used as again pixel electrode and use.
The reflecting electrode 201 that can simultaneously use as pixel electrode providing in the present embodiment adopts opaque metal material to make, because adopting metal material, makes pixel electrode, can reduce the resistance of pixel electrode, thereby reduce the delay of pixel voltage signal.
The semi-transparent semi-reflecting display panels of the embodiment of the present invention can be the semi-transparent semi-reflecting display panels of dual-box thick, the liquid crystal cell that is described transmission area and described echo area is thick unequal, so that light is matched at the phase-delay quantity of the liquid crystal of the liquid crystal through transmission area and echo area, and finally reach semi-transparent semi-reflecting display effect.
Preferably, the semi-transparent semi-reflecting display panels of the embodiment of the present invention is the thick semi-transparent semi-reflecting display panels of single box, and the liquid crystal cell of described transmission area and described echo area is thick equates, thereby can simplify technology difficulty.
Liquid crystal layer 300 in the embodiment of the present invention can adopt conventional positivity liquid crystal, and while adopting conventional positivity liquid crystal, described first substrate 100 also needs to arrange the first oriented layer 102, also needs to arrange the second oriented layer 202 on second substrate 200.
Concrete, structural representation when the semi-transparent semi-reflecting positivity display panels that Figure 1 shows that the embodiment of the present invention does not power up.Fig. 2 is the structural representation of the semi-transparent semi-reflecting display panels in Fig. 1 while powering up.
As shown in Figure 1, while not powering up, in transmission area and echo area, the first oriented layer 102 of the first substrate 100 in the embodiment of the present invention and the second oriented layer 202 of second substrate 200 are all used the mode being vertically oriented, liquid crystal molecule is vertically oriented in the time not powering up, can reduce dark state light leak, improve contrast.
As shown in Figure 2, when making alive, in reflecting electrode 201 and the just right part of public electrode 101, liquid crystal molecule becomes inclination queue gradually owing to being subject to the impact of vertical electric field, can produce less horizontal phase and postpone under the vertical electric field action in echo area.And, in transmission area reflecting electrode 201 and the non-just right part of public electrode 101, electric field line is vergence direction and arranges, liquid crystal molecule becomes inclination queue gradually owing to being subject to the impact of tilting electric field, produce the phase delay of vergence direction, under the tilting electric field effect of transmission area, can produce larger horizontal phase and postpone.
The liquid crystal layer 300 of the embodiment of the present invention can also adopt blue phase liquid crystal, and the characteristic of blue phase liquid crystal is: (1), in not alive situation, blue phase liquid crystal is isotropy, and it is large that blue phase liquid crystal display device has angle of visibility, the dark good feature of state.(2) the theoretical response time of blue phase liquid crystal display device can reach below Millisecond, thereby has improved the response time greatly.(3) due to the stabilizing polymer of blue phase liquid crystal, in not alive situation, be isotropy, make it not need other the necessary oriented layer of various liquid crystal display patterns, thereby reduced manufacturing cost, simplified manufacturing process.
Particularly, the structural representation of the semi-transparent semi-reflecting blue-phase liquid crystal display panel that Figure 3 shows that the present embodiment in the time not powering up.Figure 4 shows that semi-transparent semi-reflecting blue-phase liquid crystal display panel in Fig. 3 structural representation in the time powering up.
As shown in Figure 3, in the time not powering up, blue phase liquid crystal is isotropy state.The light of transmission area and echo area will can not produce optical path difference through the blue phase liquid crystal of isotropy state, realize the demonstration of dark state.Like this, can reduce dark state light leak, improve contrast.
As shown in Figure 4, in the time powering up, in reflecting electrode 201 and the just right part of public electrode 101, liquid crystal molecule becomes inclination queue gradually owing to being subject to the impact of vertical electric field, can produce less horizontal phase and postpone under the vertical electric field action in echo area.And, in transmission area reflecting electrode 201 and the non-just right part of public electrode 101, electric field line is vergence direction and arranges, liquid crystal molecule becomes inclination queue gradually owing to being subject to the impact of tilting electric field, produce the phase delay of vergence direction, under the tilting electric field effect of transmission area, can produce larger horizontal phase and postpone.
In above-mentioned two embodiment, if will obtain the semi-transparent semi-reflecting display effect of single box thick structure, can by the width of the width to transmission area, echo area and liquid crystal cell is thick be optimized, make can produce than the more phase delay in echo area through the light of transmission area.
If can producing larger horizontal phase by the blue phase liquid crystal of transmission area under tilting electric field effect, light postpones for △ n
transmission area; The blue phase liquid crystal of echo area postpones for △ n owing to producing less horizontal phase under vertical electric field action
echo area.
If realize semi-transparent semi-reflecting display effect, width and the liquid crystal cell of width, echo area that need to optimize transmission area is thick, and the phase-delay quantity that makes light pass through the blue phase liquid crystal of transmission area is: △ n
transmission area× d
transmission area=λ/2; Wherein, d
transmission areafor the light of transmission area is through the light path of blue phase liquid crystal; The light once phase-delay quantity of the liquid crystal by echo area is: △ n
echo area× d
echo area=λ/4; Wherein, d
echo areafor the light of echo area once passes through the light path of blue phase liquid crystal.
And for transmission area and echo area, if whole transmission area △ n of blue phase liquid crystal under the effect of electric field is 2 times of echo area, i.e. △ n
transmission area/ △ n
echo area=2, transmission area light equals echo area light once by the light path of liquid crystal, i.e. d by the light path of liquid crystal
transmission area=d
echo area; From whole structure, △ n
transmission area× d
transmission arean=2 △ n
echo area× d
echo area; And in echo area, light is wanted twice by the blue phase liquid crystal of echo area, therefore light matches at the phase-delay quantity of the liquid crystal of the liquid crystal through transmission area and echo area, and finally reaches semi-transparent semi-reflecting display effect.
It should be noted that, due to reflecting electrode 201 be whole corresponding to echo area arrange, the width of echo area is the width of reflecting electrode 201 namely, the width of transmission area is the spacing between adjacent two reflecting electrodes 201 namely.
What the width of above-mentioned transmission area, the width of echo area and liquid crystal cell were thick determines relevant with the character (as: birefraction character, dielectric anisotropy character, Cole's constant etc.) of liquid crystal molecule.Specifically can be according to following method of testing for the panel that comprises specific a kind of liquid crystal molecule, determine that width and the liquid crystal cell of width, echo area of transmission area is thick:
First, manufacture different test panels according to predefined several test values (width of transmission area, the width of echo area and liquid crystal cell are thick), and, in these test panels, all fill above-mentioned specific a kind of liquid crystal.
Then, draw V-T (voltage-transmitance) curve characteristic of transmission area and the echo area of these test panels, if the transmission area of a test panel is consistent in error range with the curve characteristic of echo area, the phase delay that transmission area is described is roughly 2 times of phase delay of echo area, and the proportionate relationship of this test panel just can be used as the reference value in actual production so.
The width of the width to above-mentioned transmission area, echo area and liquid crystal cell are thick in embodiments of the present invention does not add restriction, and can make the light of transmission area, echo area of same pixel region by identical being as the criterion of phase-delay quantity that liquid crystal layer was produced in actual production.
A kind of preferred fit mode of half-reflection and half-transmission positivity display panels is also provided in the embodiment of the present invention in addition.
As illustrated in fig. 1 and 2, comprising: first substrate 100, and the second substrate 200 that is oppositely arranged of described first substrate 100 and be arranged at the positivity liquid crystal layer 300 between described first substrate 100 and described second substrate 200.
Wherein, described first substrate 100 comprises:
The first underlay substrate 103;
Be formed at a side of the close described second substrate 200 of described the first underlay substrate 103, and the public electrode 101 arranging corresponding to whole described echo area and described transmission area;
Be formed at a side of the close described second substrate 200 of described the first underlay substrate 103, and the first oriented layer 102 arranging corresponding to whole described echo area and described transmission area; And
Be formed at the side away from described second substrate 200 of described the first underlay substrate 103, and the first polaroid 104 arranging corresponding to whole described echo area and described transmission area;
Described second substrate 200 comprises:
The second underlay substrate 203;
Be formed at a side of the close described first substrate 100 of described the second underlay substrate 203, and the reflecting electrode 201 arranging corresponding to described echo area;
Be formed at a side of the close described first substrate 100 of described the second underlay substrate 203, and the second oriented layer 202 arranging corresponding to whole described echo area and described transmission area; And
Be formed at the side away from described first substrate 100 of described the second underlay substrate 203, and the second polaroid 204 arranging corresponding to whole described echo area and described transmission area.
A kind of preferred fit mode of half-reflection and half-transmission blue-phase liquid crystal display panel is also provided in the embodiment of the present invention in addition.
As shown in Figures 3 and 4, comprising: first substrate 100, and the second substrate 200 that is oppositely arranged of described first substrate 100 and be arranged at the blue phase liquid crystal layer 300 between described first substrate 100 and described second substrate 200.
Wherein, described first substrate 100 comprises:
The first underlay substrate 103;
Be formed at a side of the close described second substrate 200 of described the first underlay substrate 103, and the public electrode 101 arranging corresponding to whole described echo area and described transmission area; And
Be formed at the side away from described second substrate 200 of described the first underlay substrate 103, and the first polaroid 104 arranging corresponding to whole described echo area and described transmission area;
Described second substrate 200 comprises:
The second underlay substrate 203;
Be formed at a side of the close described first substrate 100 of described the second underlay substrate 203, and the reflecting electrode 201 arranging corresponding to described echo area; And
Be formed at the side away from described first substrate 100 of described the second underlay substrate 203, and the second polaroid 204 arranging corresponding to whole described echo area and described transmission area.
In above-mentioned two embodiment, the first underlay substrate 103 and the second underlay substrate 203 can be selected the materials such as glass, quartz, transparent resin, in this no limit.
In addition, it should be noted that, the semi-transparent semi-reflecting display panels providing in the present embodiment, the voltage applying on the pixel electrode in the echo area of each sub-pixel equates, can be to be powered by same TFT switch, can be also to be powered by different TFT switches.
Preferably, the first substrate 100 in the semi-transparent semi-reflecting display panels providing in the present embodiment is color membrane substrates, and second substrate 200 is array base palte.
In the time that described first substrate 100 is color membrane substrates, described first substrate 100, except comprising each layer in above-described embodiment, also comprises color film functional layer, as chromatic filter layer etc.
In the time that described second substrate 200 is array base palte, described second substrate 200, except comprising each layer in above-described embodiment, also comprises TFT functional layer, as TFT switch, data line, grid line etc.
The embodiment of the present invention also provides a kind of liquid crystal indicator, comprises the semi-transparent semi-reflecting display panels in above-mentioned arbitrary embodiment.Described liquid crystal indicator can be: any product or parts with Presentation Function such as mobile phone, panel computer, televisor, display, notebook computer, digital album (digital photo frame), navigating instrument.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of principle of the present invention; can also make multiple improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a semi-transparent semi-reflecting display panels, comprise first substrate, and the second substrate that is oppositely arranged of described first substrate and be arranged at described first substrate and described second substrate between liquid crystal layer; Wherein, described first substrate and described second substrate comprise multiple sub-pixels, and described in each, sub-pixel comprises echo area and transmission area; It is characterized in that:
On described first substrate, corresponding whole described transmission area and described echo area are provided with public electrode;
On described second substrate, be provided with the reflecting electrode as pixel electrode simultaneously corresponding to the part of described echo area.
2. semi-transparent semi-reflecting display panels according to claim 1, described echo area and described transmission area transpostion interval arrange.
3. semi-transparent semi-reflecting display panels according to claim 1, is characterized in that,
Described reflecting electrode adopts opaque metal material to make.
4. semi-transparent semi-reflecting display panels according to claim 1, is characterized in that,
Thick the equating of liquid crystal cell of described transmission area and described echo area.
5. semi-transparent semi-reflecting display panels according to claim 1, is characterized in that,
Described liquid crystal layer is positivity liquid crystal layer.
6. semi-transparent semi-reflecting display panels according to claim 5, is characterized in that,
Described first substrate comprises:
The first underlay substrate;
Be formed at a side of the close described second substrate of described the first underlay substrate, and the described public electrode arranging corresponding to whole described echo area and described transmission area;
Be formed at a side of the close described second substrate of described the first underlay substrate, and the first oriented layer arranging corresponding to whole described echo area and described transmission area;
Be formed at the side away from described second substrate of described the first underlay substrate, and the first polaroid arranging corresponding to whole described echo area and transmission area;
Described second substrate comprises:
The second underlay substrate;
Be formed at a side of the close described first substrate of described the second underlay substrate, and the described reflecting electrode arranging corresponding to described echo area;
Be formed at a side of the close described first substrate of described the second underlay substrate, and the second oriented layer arranging corresponding to whole described echo area and described transmission area;
Be formed at the side away from described first substrate of described the second underlay substrate, and the second polaroid arranging corresponding to whole described echo area and transmission area.
7. semi-transparent semi-reflecting display panels according to claim 1, is characterized in that,
Described liquid crystal layer is blue phase liquid crystal layer.
8. semi-transparent semi-reflecting display panels according to claim 7, is characterized in that,
Described first substrate comprises:
The first underlay substrate;
Be formed at a side of the close described second substrate of described the first underlay substrate, and the described public electrode arranging corresponding to whole described echo area and described transmission area;
Be formed at the side away from described second substrate of described the first underlay substrate, and the first polaroid arranging corresponding to whole described echo area and transmission area;
Described second substrate comprises:
The second underlay substrate;
Be formed at a side of the close described first substrate of described the second underlay substrate, and the described reflecting electrode arranging corresponding to described echo area;
Be formed at the side away from described first substrate of described the second underlay substrate, and the second polaroid arranging corresponding to whole described echo area and transmission area.
9. according to the semi-transparent semi-reflecting display panels described in claim 1-8 any one, it is characterized in that, described first substrate is color membrane substrates, and described second substrate is array base palte.
10. a liquid crystal indicator, is characterized in that, comprises the semi-transparent semi-reflecting display panels described in claim 1-9 any one.
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| CN113589579A (en) * | 2021-07-23 | 2021-11-02 | Tcl华星光电技术有限公司 | Semi-transparent semi-reflection display device |
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| CN103969899B (en) | 2017-01-04 |
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