Vertical alignment liquid crystal panel structure

Abstract

The utility model provides a vertical alignment liquid crystal panel structure, which comprises a driving substrate, a reflecting layer, a liquid crystal layer and an upper substrate, more than one first groove part and a light-permeable second groove part are formed at the top of the driving substrate, the reflecting layer is arranged on the more than one first groove part, and the liquid crystal layer is arranged on the upper substrate. The liquid crystal layer is arranged on the more than one first groove part and the second groove part, and the upper substrate is arranged on the liquid crystal layer; wherein the first groove part and the second groove part of the driving substrate are respectively provided with a first depth and a second depth, and the second depth of the second groove part is smaller than the first depth of the more than one first groove part. The distance between the second groove part and the upper substrate is approximate to the distance between the reflecting layer and the upper substrate, the penetration rate and the penetration contrast ratio of the vertical alignment type liquid crystal display are improved, and the purpose of improving the display effect is achieved.

Description

Technical Field

[0001] The utility model relates to a panel structure of a display, in particular to a vertically aligned liquid crystal panel structure. Background Art

[0002] The known panel structure of a semi-transmissive and semi-reflective vertically aligned (VA) liquid crystal display includes a driving substrate, a reflective metal layer, a liquid crystal layer and an upper substrate. The top of the driving substrate is concave-convex. The reflective metal layer is disposed on the top of the driving substrate. The covered range of the reflective metal layer forms a reflective area, and the uncovered range of the reflective metal layer forms a transmissive area. The liquid crystal layer is disposed above the top of the driving substrate. The liquid crystal layer includes a plurality of vertically aligned liquid crystal molecules. The upper substrate is disposed above the liquid crystal layer.

[0003] In the prior art, in order to effectively control the tilting direction of the vertically aligned liquid crystal molecules within the range of the transmissive area, the top of the driving substrate is usually processed to improve the structural control force. However, this results in too large a liquid crystal gap in the transmissive area (that is, the distance between the top of the driving substrate and the upper substrate within the transmissive area), which has an obvious difference from the liquid crystal gap in the reflective area (that is, the distance between the reflective metal layer and the upper substrate within the reflective area), causing a decrease in the transmittance and the transmissive contrast of the VA liquid crystal display and affecting the display effect of the VA liquid crystal display.

[0004] Therefore, it is indeed necessary to propose a better solution to solve the above deficiencies of the prior art. Summary of the Utility Model

[0005] In view of the above deficiencies of the prior art, the main object of the utility model is to provide a vertically aligned liquid crystal panel structure, which improves the display effect by improving the architecture of the driving substrate.

[0006] To solve the above problems of the prior art, the technical solution adopted by the utility model is to make the above-mentioned vertically aligned liquid crystal panel structure include:

[0007] A driving substrate, on the top of which one or more first groove portions and a second groove portion which is light transmissive are formed. The one or more first groove portions have a first depth, and the second groove portion has a second depth;

[0008] A reflective layer, which is disposed on the first groove portion of the driving substrate;

[0009] A liquid crystal layer, which is disposed on the first groove portion and the second groove portion of the driving substrate;

[0010] an upper substrate disposed on the liquid crystal layer;

[0011] The second depth of the second groove portion is smaller than the first depth of the one or more first groove portions.

[0012] Preferably, a difference between a first depth of the one or more first groove portions and a second depth of the second groove portion is in a range of 0.25 micrometers to 0.9 micrometers.

[0013] Preferably, the driving substrate further comprises:

[0014] A transparent substrate;

[0015] an active element disposed on the lower transparent substrate;

[0016] an isolation layer covering the lower transparent substrate and the active element, wherein the top surface of the isolation layer forms the one or more first groove portions and the second groove portions;

[0017] A lower transparent electrode layer is disposed on the one or more first groove portions and the second groove portion, and the reflective layer is disposed on the lower transparent electrode layer.

[0018] Preferably, the side walls of the one or more first groove portions are respectively in a stepped structure.

[0019] Preferably, the device further comprises a liquid crystal molecule control unit, wherein the liquid crystal molecule control unit is arranged at the bottom of the upper substrate and corresponds to the position of the second groove portion.

[0020] Preferably, it further comprises a supporting structure, wherein the top of the supporting structure is arranged on the bottom of the upper substrate, and the bottom of the supporting structure is arranged on the upper surface of the reflective layer.

[0021] Preferably, the upper substrate further comprises:

[0022] an upper transparent electrode layer, which is disposed on the liquid crystal layer, and the upper transparent electrode layer constitutes the bottom of the upper substrate;

[0023] a flat layer disposed on the upper transparent electrode layer;

[0024] a color resist layer disposed on the flat layer;

[0025] An upper transparent substrate is disposed on the color resist layer.

[0026] Preferably, the driving substrate further comprises a storage capacitor, which is disposed on the lower transparent substrate and adjacent to the active element, and the isolation layer covers the storage capacitor.

[0027] Preferably, the lower transparent electrode layer and the reflective layer form a first gap, and the first gap is located between two adjacent first groove portions.

[0028] Preferably, the upper transparent electrode layer forms a second gap.

[0029] The utility model forms one or more first groove portions and a second light-transmissive groove portion on the top of the driving substrate, and the second depth of the second groove portion is less than the first depth of the one or more first groove portions, so as to avoid the second groove portion being too far away from the upper substrate, thereby improving the transmittance and penetration contrast of the vertically aligned liquid crystal display and achieving the purpose of improving the display effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of an embodiment of the panel structure of the present utility model;

[0031] Figure 2 is another schematic diagram of an embodiment of the panel structure of the present utility model;

[0032] Figure 3 It is another schematic diagram of an embodiment of the panel structure of the utility model;

[0033] Figure 4 It is another schematic diagram of an embodiment of the panel structure of the utility model;

[0034] Figure 5 is another schematic diagram of an embodiment of the panel structure of the present utility model;

[0035] Figure 6 This is yet another schematic diagram of an embodiment of the panel structure of the present invention. DETAILED DESCRIPTION

[0036] For the embodiment of the vertically aligned liquid crystal panel structure of the present invention, please refer to Figure 1As shown, it includes a driving substrate 10, a reflective layer 20, a liquid crystal layer 30 and an upper substrate 40, wherein the top of the driving substrate 10 forms one or more first groove portions 11 and a second groove portion 12 that is translucent, and the one or more first groove portions 11 and the second groove portion 12 are adjacent to each other; the reflective layer 20 is arranged on the first groove portion 11 of the driving substrate 10, the range covered by the reflective layer 20 constitutes a reflective area, and the range formed by the second groove portion 12 constitutes a penetration area. In this embodiment, the reflective area and the penetration area constitute a pixel unit; the liquid crystal layer 30 is arranged on the first groove portion 11 and the second groove portion 12 of the driving substrate 10, and the liquid crystal layer 30 includes a plurality of vertically aligned liquid crystal molecules; the upper substrate 40 is arranged on the liquid crystal layer 30; wherein the one or more first groove portions 11 have a first depth D1, the second groove portion 12 has a second depth D2, and the second depth D2 of the second groove portion 12 is less than the first depth D1 of the one or more first groove portions 11.

[0037] Therefore, the utility model forms the one or more first groove portions 11 and the light-transmissive second groove portion 12 on the top of the driving substrate 10, and the second depth D2 of the second groove portion 12 is less than the first depth D1 of the one or more first groove portions 11, so as to avoid the distance between the second groove portion 12 and the upper substrate 40 being too large, thereby improving the transmittance and the transmittance contrast of the vertically aligned liquid crystal display, and achieving the purpose of improving the display effect. In this embodiment, the distance between the second groove portion 12 of the driving substrate 10 and the bottom of the upper substrate 40 constitutes the liquid crystal gap of the transmittance area.

[0038] In this embodiment, the difference between the first depth D1 of the one or more first groove portions 11 and the second depth D2 of the second groove portion 12 may be between 0.25 micrometers and 0.9 micrometers.

[0039] See also Figure 2As shown, in this embodiment, the driving substrate 10 further includes a lower transparent substrate 13, an active element 14, an isolation layer 15 and a lower transparent electrode layer 16; wherein the active element 14 is disposed on the lower transparent substrate 13, the isolation layer 15 covers the lower transparent substrate 13 and the active element 14, and the top surface of the isolation layer 15 is subjected to multiple masking processes to form the first groove portion 11 and the second groove portion 12 of the driving substrate 10. Further, the lower transparent electrode layer 16 is disposed on the one or more first groove portions 11 and the second groove portion 12 in a shape matching manner, and the reflective layer 20 is disposed on the lower transparent electrode layer 16. In this embodiment, the lower transparent substrate 13 can be made of a glass material; the material used for the lower transparent electrode layer 16 can include indium tin oxide (ITO), but is not limited thereto.

[0040] Through the setting of the second groove portion 12, the second groove portion 12 can control the tilting direction of the majority of vertically aligned liquid crystal molecules within the range of the penetration zone, so that the majority of vertically aligned liquid crystal molecules within the range of the penetration zone are arranged along the direction of the second groove portion 12, thereby improving the penetration contrast and viewing angle of the utility model.

[0041] In addition, if Figure 2 As shown, in this embodiment, the driving substrate 10 may further include a storage capacitor 17 , which is disposed on the lower transparent substrate 13 , and is adjacent to the active element 14 , and the isolation layer 15 covers the storage capacitor 17 .

[0042] In order to enhance the reflection effect of the present invention, please refer to Figure 3 As shown in FIG. 1 , in this embodiment, the side walls of the one or more first groove portions 11 are respectively in a stepped structure. For example, the one or more first groove portions 11 can be formed by two photomask processes with different patterns on the top surface of the isolation layer 15, so that the side walls of the one or more first groove portions 11 are in a two-layer stepped structure (e.g. Figure 3 or the top surface of the isolation layer 15 may be subjected to two or more mask processes with different patterns to form the one or more first groove portions 11, so that the side walls of the one or more first groove portions 11 have a stepped structure of more than two layers.

[0043] See also Figure 4As shown, in this embodiment, the utility model may further include a liquid crystal molecule control unit 50, which is arranged at the bottom of the upper substrate 40 and corresponds to the position of the second groove portion 12, wherein the bottom of the upper substrate 40 faces the top of the driving substrate 10. In this embodiment, the liquid crystal molecule control unit 50 is composed of an arc-shaped convex portion. By arranging the liquid crystal molecule control unit 50 at the bottom of the upper substrate 40, the liquid crystal molecule control unit 50 will control the tilting direction of the plurality of vertically aligned liquid crystal molecules within the penetration area of ​​the second groove portion 12, so that the plurality of vertically aligned liquid crystal molecules within the penetration area are uniformly diffused and arranged outward with the liquid crystal molecule control unit 50 as the center, thereby improving the viewing angle of the utility model.

[0044] like Figure 4 As shown, in this embodiment, the utility model may further include a supporting structure 60, which is columnar, and the top of the supporting structure 60 is arranged at the bottom of the upper substrate 40, and the bottom of the supporting structure 60 extends downward to be arranged on the upper surface of the reflective layer 20, and the supporting structure 60 is used to maintain the distance between the reflective layer 20 and the upper substrate 40.

[0045] See also Figure 5 As shown, in this embodiment, the upper substrate 40 further includes an upper transparent electrode layer 41, a flat layer 42, a color resist layer 43 and an upper transparent substrate 44; the upper transparent electrode layer 41 is disposed on the liquid crystal layer 30, and the upper transparent electrode layer 41 constitutes the bottom of the upper substrate 40. In this embodiment, the liquid crystal molecule control unit 50 and the support structure 60 are disposed on the lower surface of the upper transparent electrode layer 41 facing the top of the driving substrate 10, the flat layer 42 is disposed on the upper transparent electrode layer 41, the color resist layer 43 is disposed on the flat layer 42, the flat layer 42 is used to flatten the bottom of the color resist layer 43, the upper transparent substrate 44 is disposed on the color resist layer 43, and the upper transparent substrate 44 can be composed of a glass material. In this embodiment, the material used for the upper transparent electrode layer 41 may include indium tin oxide (ITO), but is not limited thereto.

[0046] See also Figure 6As shown, in this embodiment, the lower transparent electrode layer 16 and the reflective layer 20 form a first gap 18, and the first gap 18 is located between two adjacent one or more first groove portions 11. The first gap 18 will generate curved electric lines, so that the vertical alignment type liquid crystal molecules adjacent to the first gap 18 will be arranged along the direction of the first gap 18. When the lower transparent electrode layer 16 is driven, the vertical alignment type liquid crystal molecules adjacent to the first gap 18 will be deflected, and the vertical alignment type liquid crystal molecules farther from the first gap 18 will be driven to be evenly diffused outwards, so as to improve the viewing angle of the utility model.

[0047] In this embodiment, the upper transparent electrode layer 41 may also be formed with a second gap (not shown). The second gap will generate curved electric lines, so that the vertically aligned liquid crystal molecules adjacent to the second gap will be arranged along the direction of the second gap. When the lower transparent electrode layer 16 is driven, the vertically aligned liquid crystal molecules adjacent to the second gap will be deflected, and the vertically aligned liquid crystal molecules farther from the second gap will be driven to be evenly diffused outward, so as to further improve the viewing angle of the present invention.

Claims

1. A vertically aligned liquid crystal panel structure, characterized in that: The vertically aligned liquid crystal panel structure comprises: A driving substrate, with one or more first grooves and a light-transmissive second groove formed on the top thereof, wherein the one or more first grooves have a first depth, and the second groove has a second depth; a reflective layer, which is disposed on the first groove portion of the driving substrate; a liquid crystal layer disposed on the first groove portion and the second groove portion of the driving substrate; an upper substrate disposed on the liquid crystal layer; The second depth of the second groove portion is smaller than the first depth of the one or more first groove portions.

2. The vertically aligned liquid crystal panel structure according to claim 1, characterized in that: A difference between a first depth of the one or more first recessed portions and a second depth of the second recessed portion is in a range of 0.25 micrometers to 0.9 micrometers.

3. The vertically aligned liquid crystal panel structure according to claim 1, characterized in that: The driving substrate further comprises: A transparent substrate; an active element disposed on the lower transparent substrate; an isolation layer covering the lower transparent substrate and the active element, wherein the top surface of the isolation layer forms the one or more first groove portions and the second groove portions; A lower transparent electrode layer is disposed on the one or more first groove portions and the second groove portion, and the reflective layer is disposed on the lower transparent electrode layer.

4. The vertically aligned liquid crystal panel structure according to claim 1, characterized in that: The side walls of the one or more first groove portions are respectively in a stepped structure.

5. The vertically aligned liquid crystal panel structure according to claim 1, characterized in that: The invention further comprises a liquid crystal molecule control unit, wherein the liquid crystal molecule control unit is arranged at the bottom of the upper substrate and corresponds to the position of the second groove portion.

6. The vertically aligned liquid crystal panel structure according to claim 1, characterized in that: It further includes a supporting structure, wherein the top of the supporting structure is arranged on the bottom of the upper substrate, and the bottom of the supporting structure is arranged on the upper surface of the reflective layer.

7. The vertically aligned liquid crystal panel structure according to claim 5 or 6, characterized in that: The upper substrate further comprises: an upper transparent electrode layer, which is disposed on the liquid crystal layer, and the upper transparent electrode layer constitutes the bottom of the upper substrate; a flat layer disposed on the upper transparent electrode layer; a color resist layer disposed on the planar layer; An upper transparent substrate is disposed on the color resist layer.

8. The vertically aligned liquid crystal panel structure according to claim 3, characterized in that: The driving substrate further includes a storage capacitor, which is disposed on the lower transparent substrate and adjacent to the active element, and the isolation layer covers the storage capacitor.

9. The vertically aligned liquid crystal panel structure according to claim 3, characterized in that: The lower transparent electrode layer and the reflective layer form a first gap, and the first gap is located between two adjacent first groove portions.

10. The vertically aligned liquid crystal panel structure according to claim 7, characterized in that: The upper transparent electrode layer forms a second gap.

Images