CN102981300A - Liquid crystal display panel, manufacturing method of liquid crystal display panel, and display device - Google Patents
Liquid crystal display panel, manufacturing method of liquid crystal display panel, and display device Download PDFInfo
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- CN102981300A CN102981300A CN2012104773669A CN201210477366A CN102981300A CN 102981300 A CN102981300 A CN 102981300A CN 2012104773669 A CN2012104773669 A CN 2012104773669A CN 201210477366 A CN201210477366 A CN 201210477366A CN 102981300 A CN102981300 A CN 102981300A
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Abstract
The embodiment of the invention discloses a liquid crystal display panel, a manufacturing method of the liquid crystal display panel, and a display device, and relates to the field of liquid crystal display. Through the liquid crystal display panel, the phase delay quantity of a transmission region and a reflection region can be guaranteed to be consistent on the basis of a single box thickness structure, and the difficulty of manufacturing a transflective liquid crystal display panel can be reduced. The liquid crystal display panel is of the single box thickness structure and comprises a first substrate and a second substrate which are oppositely arranged; a liquid crystal molecular layer is arranged between the first substrate and the second substrate; the first substrate comprises a plurality of sub-pixel regions divided by horizontally and vertically crossed grid lines and data lines; each sub-pixel region comprises a transmission region and a reflection region; and liquid crystal molecules in the liquid crystal molecular layer of the transmission regions form a first pre-tilt angle with a horizontal plane, liquid crystal molecules in the liquid crystal molecular layer of the reflection regions form a second pre-tilt angle with the horizontal plane, and the first pre-tilt angle is less than the second pre-tilt angle.
Description
Technical field
The present invention relates to field of liquid crystal display, relate in particular to a kind of display panels and preparation method thereof, display device.
Background technology
The advantages such as that semi-transparent semi-reflecting liquid crystal display has is low in energy consumption, surround lighting strong adaptability, it is relatively more active at present flat panel display, be widely used in the mobile display devices such as mobile phone, palm PC (Personal Digital Assistant is called for short PDA).Semi-transparent semi-reflecting liquid crystal display can adopt transmission mode and reflective-mode to show image individually or simultaneously, so semi-transparent semi-reflecting liquid crystal display can be used under any surround lighting.The basic structure of semi-transparent semi-reflecting liquid crystal display is that each red, green, blue sub-pixel unit is divided into transmission area and echo area two parts, makes the liquid crystal of transmission area work in transmission mode, and the liquid crystal of echo area works in reflective-mode.Its principle of work is: when environment is darker, open backlight, light sees through transmission area, device works in transmission mode, and under bright environment, extraneous intensity of illumination is larger than the intensity of illumination of backlight, and semi-transmission semi-reflection LCD works in reflective-mode, and the light that utilizes reflection to come from the outside shows image.
The inventor finds in realizing process of the present invention, because the light of transmission area outgoing is only through a layer of liquid crystal molecule, and the light of echo area outgoing has passed through layer of liquid crystal molecule twice, when the thickness of the layer of liquid crystal molecule of echo area when arranging with transmission area consistent, the light path of echo area is the twice of transmission area light path, because there are optical path difference in transmission area and echo area, do not mate through the light phase-delay quantity of transmission area and echo area outgoing, thus the display effect of having a strong impact on.So; for the phase-delay quantity that guarantees transmission area and echo area consistent; existing transflective liquid crystal display adopts the structure of dual-box thick usually; realize that by the light path of transmission area or echo area the phase-delay quantity of transmission area and echo area is consistent by changing light; but the structure of dual-box thick can improve the difficulty of the manufacture craft of transflective liquid crystal display usually; and then improved the cost of manufacture of transflective liquid crystal display, reduced yields.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of display panels and preparation method thereof, display device, this display panels can guarantee that on the basis of single box thick structure the phase-delay quantity of transmission area and echo area is consistent, has reduced the difficulty of the manufacture craft of Transflective display panels.
For solving the problems of the technologies described above, embodiments of the invention adopt following technical scheme:
The first aspect of the embodiment of the invention, a kind of display panels is provided, described display panels is single box thick structure, comprise the first substrate and the second substrate that are oppositely arranged, be provided with layer of liquid crystal molecule between described first substrate and the described second substrate, described first substrate comprises several subpixel area that marked off by the grid line of transverse and longitudinal intersection and data line, each described subpixel area comprises transmission area and echo area, liquid crystal molecule in the layer of liquid crystal molecule of described transmission area is horizontal by the first tilt angle, liquid crystal molecule in the layer of liquid crystal molecule of described echo area is horizontal by the second tilt angle, and described the first tilt angle is less than described the second tilt angle.
Liquid crystal molecule in the layer of liquid crystal molecule of described transmission area is parallel to each other, and the liquid crystal molecule in the layer of liquid crystal molecule of described echo area is parallel to each other.
Described first substrate comprises the first polaroid, the first transparency carrier, passivation layer, pixel electrode layer and the first oriented layer from bottom to top successively, in described echo area, is provided with the reflection horizon in the described passivation layer.
The surface in described reflection horizon is concaveconvex structure.
Described pixel electrode layer comprises the first pixel electrode that is positioned at transmission area and the second pixel electrode that is positioned at the echo area.
Described the first tilt angle is 5 ° to 35 °, and described the second tilt angle is 20 ° to 50 °, and the thickness of described layer of liquid crystal molecule is 2 microns to 8 microns.
In the technical scheme of the embodiment of the invention, liquid crystal molecule in the layer of liquid crystal molecule of described transmission area is horizontal by the first tilt angle, liquid crystal molecule in the layer of liquid crystal molecule of described echo area is horizontal by the second tilt angle, described the first tilt angle is less than described the second tilt angle so that through the phase-delay quantity of the transmitted light of transmission area outgoing with flux matched through the catoptrical phase delay of echo area outgoing.And, because the display panels that adopts among the present invention is the thick structure of single box, thereby greatly simplified the difficulty of Transflective display panels manufacture craft.
The second aspect of the embodiment of the invention provides a kind of method for making of display panels, comprising:
Hide respectively the first oriented layer and second oriented layer of the echo area of described display panels;
Shine respectively the first oriented layer and second oriented layer of the transmission area of described display panels with the ultraviolet light horizontal by the first angle;
Hide respectively the first oriented layer and second oriented layer of the transmission area of described display panels;
Shine respectively the first oriented layer and second oriented layer of the echo area of described display panels with the ultraviolet light horizontal by the second angle.
The material of described the first oriented layer and described the second oriented layer is photosensitive polyimide.
In the technical scheme of the embodiment of the invention, a kind of method for making of display panels is provided, and the method for making of this kind display panels is less demanding to manufacture craft, and is simple and easy to do, improve the making yields of display panels, reduced the cost of manufacture of display panels.
The third aspect of the embodiment of the invention provides a kind of display device, comprises above-mentioned display panels.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation one of display panels in the embodiment of the invention;
Fig. 2 is the structural representation two of display panels in the embodiment of the invention;
Fig. 3 is the process flow diagram of the method for making of display panels in the embodiment of the invention.
Description of reference numerals:
1-first substrate; The 11-the first polaroid; The 12-the first transparency carrier;
13-passivation layer; 14-pixel electrode layer; The 15-the first oriented layer;
16-reflection horizon; 2-second substrate; 3-liquid crystal layer;
31-liquid crystal molecule.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Embodiment one
The embodiment of the invention provides a kind of display panels, described display panels is single box thick structure, as shown in Figure 1, comprise the first substrate 1 and the second substrate 2 that are oppositely arranged, be provided with layer of liquid crystal molecule 3 between described first substrate 1 and the described second substrate 2, described first substrate 1 comprises several subpixel area that marked off by the grid line of transverse and longitudinal intersection and data line, and each described subpixel area comprises transmission area and echo area.
Wherein, liquid crystal molecule 31 in the layer of liquid crystal molecule 3 of described transmission area is horizontal by the first tilt angle α, liquid crystal molecule 31 in the layer of liquid crystal molecule 3 of described echo area is horizontal by the second tilt angle β, and described the first tilt angle α is less than described the second tilt angle β.
Because the liquid crystal molecule 31 of transmission area is horizontal by the first tilt angle α, and the liquid crystal molecule 31 of echo area is horizontal by the second tilt angle β, and the first tilt angle α is less than the second tilt angle β, this means that the liquid crystal molecule 31 of transmission area is in liquid crystal molecule 31 the horizontal component on surface level of the horizontal component on the surface level greater than the echo area, when then passing respectively the layer of liquid crystal molecule 3 of the transmission area of same thickness and echo area with a branch of light, light is at the layer of liquid crystal molecule 3 interior horizontal phase retardation △ n that produce of transmission area
1The layer of liquid crystal molecule 3 interior horizontal phase retardation △ n that produce greater than the echo area
2
Further, because the display panels among the present invention is single box thick structure, the thickness of layer of liquid crystal molecule 3 that is transmission area is identical with the thickness of the layer of liquid crystal molecule 3 of echo area, and because the light of transmission area outgoing only need be through a layer of liquid crystal molecule 3, the light of echo area outgoing needs through twice layer of liquid crystal molecule 3, it is d echo area=2*d transmission area, then by the optimization to the second tilt angle β of the liquid crystal molecule 31 of the first tilt angle α of the liquid crystal molecule 31 in the layer of liquid crystal molecule 3 of transmission area or echo area, can be so that △ n
1=2* △ n
2, to sum up, can obtain transmission area (△ n*d)=echo area (△ n*d), thereby realize the coupling of the phase-delay quantity of transmission area and echo area, and finally reach semi-transparent semi-reflecting display effect.
In the technical scheme of present embodiment, liquid crystal molecule in the layer of liquid crystal molecule of described transmission area is horizontal by the first tilt angle, liquid crystal molecule in the layer of liquid crystal molecule of described echo area is horizontal by the second tilt angle, described the first tilt angle is less than described the second tilt angle so that through the phase-delay quantity of the transmitted light of transmission area outgoing with flux matched through the catoptrical phase delay of echo area outgoing.And, because the display panels that adopts among the present invention is the thick structure of single box, thereby greatly simplified the difficulty of Transflective display panels manufacture craft.
Embodiment two
The embodiment of the invention provides a kind of display panels, on the basis of embodiment one, consideration for the difficulty that reduces manufacture craft, liquid crystal molecule 31 in the layer of liquid crystal molecule 3 of described transmission area can be parallel to each other, and the liquid crystal molecule 31 in the layer of liquid crystal molecule 3 of described echo area can be parallel to each other.
Further, described first substrate 1 comprises the first polaroid 11, the first transparency carrier 12, passivation layer 13, pixel electrode layer 14 and the first oriented layer 15 from bottom to top successively, in described echo area, is provided with reflection horizon 16 in the described passivation layer 13.
Wherein, described reflection horizon 16 is used for the light reflection in the echo area to extraneous.
Because described reflection horizon 16 is arranged in the described passivation layer 13, and the thickness of passivation layer 13 that is positioned at transmission area is greater than the thickness of the passivation layer 13 of echo area, so that this passivation layer 13 is surperficial equal.So, by the passivation layer of uneven thickness is set, can guarantee the planarization on first substrate 1 surface.
Further, the surface in described reflection horizon 16 is concaveconvex structure.The reflector layer 16 of relief structured surface can make extraneous light generation diffuse reflection, and light reflection is arrived all directions.Than the one direction reflection of plane mirror, the reflector layer 16 of relief structured surface can utilize light source more fully, makes the coverage rate of light source wider, and light is also more even.Preferably, reflector layer 16 is made of aluminum.
Further, described pixel electrode layer 14 comprises the first pixel electrode that is positioned at transmission area and the second pixel electrode that is positioned at the echo area.
Because the first tilt angle α of the liquid crystal molecule 31 of transmission area is different from the second tilt angle β of the liquid crystal molecule 31 of echo area, and when pixel electrode layer 14 energising, arranging of the liquid crystal molecule 31 of transmission area and echo area need to be changed into perpendicular straight arranged form as shown in Figure 2, then the driving voltage that needs of the liquid crystal molecule 31 of transmission area is different from the driving voltage that the liquid crystal molecule of echo area need to load, so usually adopt the first pixel electrode of mutually insulated and liquid crystal molecule 31 that the second pixel electrode drives respectively transmission area and the liquid crystal molecule 31 of echo area.The first pixel electrode is powered by the first data line, and the second pixel electrode is powered by the second data line.So, namely can effectively control the phase-delay quantity that transmission area and echo area produce by the driving voltage that changes the first pixel electrode and the second pixel, thereby greatly increase the dirigibility of display panels control.
In addition, described the first pixel electrode also can be connected with described the second pixel electrode even be one-body molded, for same data line is powered, as long as the driving voltage that this pixel electrode layer of assurance provides is greater than the maximal value of the driving voltage of transmission area or echo area needs.
Further, through the series of experiments checking, the optional scope of described the first tilt angle α is 5 ° to 35 °, the optional scope of described the second tilt angle β is 20 ° to 50 °, but must guarantee the value of the first tilt angle α less than the value of the second tilt angle β, and the thickness of described layer of liquid crystal molecule 3 is 2 microns to 8 microns.By the optimization to the second tilt angle β of the liquid crystal molecule 31 of the first tilt angle α of the liquid crystal molecule 31 in the layer of liquid crystal molecule 3 of transmission area or echo area, finally can determine the value separately when the first tilt angle α and the second tilt angle β satisfy transmission area (△ n*d)=this formula of echo area (△ n*d), for example, the first tilt angle α is preferably 12.5 °, this moment, the second tilt angle β was preferably 32.5 °, and the thickness of described layer of liquid crystal molecule 3 is 4.4 microns.
The embodiment of the invention also provides a kind of display device that comprises above-mentioned display panels.
Embodiment three
The embodiment of the invention provides a kind of method for making of display panels, and as shown in Figure 3, the method comprises:
Step S101, hide the first oriented layer and second oriented layer of the echo area of described display panels respectively;
Step S102, transmission area the first oriented layer and second oriented layer of shining respectively described display panels with the ultraviolet light horizontal by the first angle;
Step S103, hide the first oriented layer and second oriented layer of the transmission area of described display panels respectively;
Step S104, echo area the first oriented layer and second oriented layer of shining respectively described display panels with the ultraviolet light horizontal by the second angle.
Thus, the first tilt angle of the liquid crystal molecule of the transmission area of prepared display panels is the first angle, and the second tilt angle of the liquid crystal molecule of echo area is the second angle.
Wherein, described step 101, step 102 and step 103, step 104 can be exchanged.
In order to adopt the method to make semi-transparent semi-reflecting display panels, the material of described the first oriented layer and described the second oriented layer should be photosensitive polyimide.Selective light degraded or photo-crosslinking can occur, thereby cause surface anisotropy under the irradiation of ultraviolet light in photosensitive polyimide, cause the orientations of liquid crystal molecule.
In the technical scheme of present embodiment, a kind of method for making of display panels is provided, and the method for making of this kind display panels is less demanding to manufacture craft, and is simple and easy to do, improve the making yields of display panels, reduced the cost of manufacture of display panels.
The above; be the specific embodiment of the present invention only, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (9)
1. display panels, described display panels is single box thick structure, comprise the first substrate and the second substrate that are oppositely arranged, be provided with layer of liquid crystal molecule between described first substrate and the described second substrate, described first substrate comprises several subpixel area that marked off by the grid line of transverse and longitudinal intersection and data line, each described subpixel area comprises transmission area and echo area, it is characterized in that
Liquid crystal molecule in the layer of liquid crystal molecule of described transmission area is horizontal by the first tilt angle, and the liquid crystal molecule in the layer of liquid crystal molecule of described echo area is horizontal by the second tilt angle, and described the first tilt angle is less than described the second tilt angle.
2. display panels according to claim 1 is characterized in that,
Liquid crystal molecule in the layer of liquid crystal molecule of described transmission area is parallel to each other, and the liquid crystal molecule in the layer of liquid crystal molecule of described echo area is parallel to each other.
3. display panels according to claim 1, it is characterized in that, described first substrate comprises the first polaroid, the first transparency carrier, passivation layer, pixel electrode layer and the first oriented layer from bottom to top successively, in described echo area, is provided with the reflection horizon in the described passivation layer.
4. display panels according to claim 3 is characterized in that, the surface in described reflection horizon is concaveconvex structure.
5. display panels according to claim 1 is characterized in that, described pixel electrode layer comprises the first pixel electrode that is positioned at transmission area and the second pixel electrode that is positioned at the echo area.
6. each described display panels is characterized in that according to claim 1-5,
Described the first tilt angle is 5 ° to 35 °, and described the second tilt angle is 20 ° to 50 °, and the thickness of described layer of liquid crystal molecule is 2 microns to 8 microns.
7. the method for making of a display panels is characterized in that, comprising:
Hide respectively the first oriented layer and second oriented layer of the echo area of described display panels;
Shine respectively the first oriented layer and second oriented layer of the transmission area of described display panels with the ultraviolet light horizontal by the first angle;
Hide respectively the first oriented layer and second oriented layer of the transmission area of described display panels;
Shine respectively the first oriented layer and second oriented layer of the echo area of described display panels with the ultraviolet light horizontal by the second angle.
8. method according to claim 7 is characterized in that,
The material of described the first oriented layer and described the second oriented layer is photosensitive polyimide.
9. a display device is characterized in that, comprises the described display panels such as claim 1-6.
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| CN103293770A (en) * | 2013-05-31 | 2013-09-11 | 京东方科技集团股份有限公司 | Display substrate and manufacturing method thereof, and liquid crystal display panel |
| CN103792721A (en) * | 2014-01-22 | 2014-05-14 | 京东方科技集团股份有限公司 | Semi-transparent and semi-reflecting liquid crystal display panel, manufacturing method thereof and display device |
| CN104503143A (en) * | 2014-12-17 | 2015-04-08 | 深圳市华星光电技术有限公司 | Transflective liquid crystal display and manufacturing method thereof |
| CN106773334A (en) * | 2016-12-28 | 2017-05-31 | 深圳市华星光电技术有限公司 | A kind of method for preparing display panel and obtained display panel |
| CN114236915A (en) * | 2021-12-30 | 2022-03-25 | Tcl华星光电技术有限公司 | Liquid crystal alignment method of display panel |
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| CN103293770B (en) * | 2013-05-31 | 2015-12-23 | 京东方科技集团股份有限公司 | Display base plate and manufacture method and display panels |
| US10168576B2 (en) | 2013-05-31 | 2019-01-01 | Boe Technology Group Co., Ltd. | Display substrate, method for fabricating the same and liquid crystal display panel |
| WO2014190648A1 (en) * | 2013-05-31 | 2014-12-04 | 京东方科技集团股份有限公司 | Display substrate and manufacturing method therefor, and liquid crystal display panel |
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| CN103792721B (en) * | 2014-01-22 | 2016-06-29 | 京东方科技集团股份有限公司 | A kind of semitransparent semi-inverse liquid crystal display panel and preparation method thereof, display device |
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| US9733513B2 (en) | 2014-01-22 | 2017-08-15 | Boe Technology Group Co., Ltd. | Transflective liquid crystal display panel comprising a transmission axis of a first polarizer and a transmission axis of a second polarizer forming an angle of 0 to 20 degrees, manufacturing method thereof, and display device |
| CN103792721A (en) * | 2014-01-22 | 2014-05-14 | 京东方科技集团股份有限公司 | Semi-transparent and semi-reflecting liquid crystal display panel, manufacturing method thereof and display device |
| WO2016095266A1 (en) * | 2014-12-17 | 2016-06-23 | 深圳市华星光电技术有限公司 | Transflective liquid crystal display and manufacturing method therefor |
| CN104503143A (en) * | 2014-12-17 | 2015-04-08 | 深圳市华星光电技术有限公司 | Transflective liquid crystal display and manufacturing method thereof |
| CN104503143B (en) * | 2014-12-17 | 2017-09-26 | 深圳市华星光电技术有限公司 | A kind of transflective liquid crystal display and its manufacture method |
| CN106773334A (en) * | 2016-12-28 | 2017-05-31 | 深圳市华星光电技术有限公司 | A kind of method for preparing display panel and obtained display panel |
| WO2018120344A1 (en) * | 2016-12-28 | 2018-07-05 | 深圳市华星光电技术有限公司 | Display panel manufacturing method and manufactured display panel |
| CN106773334B (en) * | 2016-12-28 | 2020-02-07 | 深圳市华星光电技术有限公司 | Method for preparing display panel and prepared display panel |
| CN114236915A (en) * | 2021-12-30 | 2022-03-25 | Tcl华星光电技术有限公司 | Liquid crystal alignment method of display panel |
| CN114236915B (en) * | 2021-12-30 | 2024-01-26 | Tcl华星光电技术有限公司 | Liquid crystal alignment method of display panel |
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