Field sequential display pixel panel

Abstract

The utility model discloses a field sequential display pixel panel which comprises a transistor array substrate, a transparent conducting layer and a liquid crystal molecular layer. The transistor array substrate comprises a plurality of pixel units, a transparent conducting layer is arranged on the transistor array substrate, and the transparent conducting layer comprises a colored transparent conducting layer and a plurality of transparent electrodes; the transistor array substrate penetrates through the insulating layers through the through holes and is connected with the colored transparent conducting layer, a plurality of insulating layers are arranged on the colored transparent conducting layer, and a plurality of transparent electrodes are arranged on the insulating layers; a liquid crystal molecular layer is arranged on the plurality of transparent electrodes; and a plurality of transparent signal electrodes are arranged between the colored transparent conductive layer and the plurality of insulating layers in the plurality of transparent electrodes. The liquid crystal display device has the advantages that a plurality of transverse electric fields are formed by additionally arranging the transparent signal electrodes, and transverse force is applied to liquid crystal molecules through the transverse electric fields, so that the response speed of the liquid crystal molecules is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of display, in particular to a field sequential display pixel panel. Background Art

[0002] The deflection of liquid crystal within an LCD panel is primarily influenced by electric forces and intermolecular forces. The liquid crystal near the alignment film, influenced by anchoring forces, provides an initial deflection angle. When no electric force is applied, the liquid crystal molecules return to their initial alignment due to intermolecular forces and elasticity. When an electric force is applied, the liquid crystal reaches a stable state due to intermolecular forces, its own elasticity, and the electric force, exhibiting polarization characteristics controlled by different voltages. The maximum deflection of positive liquid crystals is along the electric field lines, while the maximum deflection of negative liquid crystals is perpendicular to the electric field.

[0003] Generally, the response time of liquid crystal molecules is divided into two parts according to the working stage of the panel: rise time and fall time: among them, the rise time refers to the backlight-on stage, and the time required for the initial orientation state of the liquid crystal molecules to be changed by the electric field, thereby increasing the transmittance of the liquid crystal molecular layer from 10% in the on state to 90%; the fall time refers to the backlight-off stage, and the time required for the liquid crystal molecules to gradually restore the initial orientation state, thereby decreasing the transmittance of the liquid crystal molecular layer from 90% in the off state to 10%; the full response time of the liquid crystal molecules is the sum of the rise time and the fall time.

[0004] When switching from low grayscale to high grayscale, the liquid crystal deflection can be accelerated by increasing the driving voltage. However, when switching from high grayscale to low grayscale, the reduction of the electric field force does not help the deflection to be faster, and the recovery of the liquid crystal's own viscoelasticity is the main reliance.

[0005] Therefore, in order to increase the response speed of liquid crystal molecules and reduce the full response time of liquid crystal molecules, the present invention proposes a field sequential display pixel panel. Utility Model Content

[0006] The purpose of the utility model is to provide a field sequential display pixel panel, which improves the response speed of liquid crystal molecules.

[0007] The purpose of the utility model is to realize a field sequential display pixel panel through the following technical solution, comprising a transistor array substrate, a transparent conductive layer, and a liquid crystal molecule layer; the transistor array substrate comprises a plurality of pixel units, a transparent conductive layer is provided on the transistor array substrate, the transparent conductive layer comprises a colored transparent conductive layer and a plurality of transparent electrodes; the transistor array substrate is connected to the colored transparent conductive layer through a through hole penetrating through the insulating layer, a plurality of insulating layers are provided on the colored transparent conductive layer, a plurality of transparent electrodes are provided on the insulating layer; a liquid crystal molecule layer is provided on the plurality of transparent electrodes;

[0008] A plurality of transparent signal electrodes are provided in the plurality of insulating layers between the colored transparent conductive layer and the plurality of transparent electrodes.

[0009] Further, the plurality of transparent signal electrodes include a first electrode, a second electrode and a third electrode;

[0010] The first electrode and the colored transparent conductive layer form a first transverse electric field, the second electrode and the colored transparent conductive layer form a second transverse electric field and a third transverse electric field, and the third electrode and the colored transparent conductive layer form a fourth transverse electric field.

[0011] Furthermore, the plurality of transparent electrodes include a transparent electrode A and a transparent electrode B; the transparent electrode A and the transparent electrode B are respectively arranged at two ends of the liquid crystal molecule layer;

[0012] The transparent electrode A and the first electrode form a fifth transverse electric field, and the transparent electrode B and the third electrode form a sixth transverse electric field.

[0013] Furthermore, the transparent signal electrode receives a pulse signal of a preset period, and the pulse signal is an AC signal.

[0014] Furthermore, the pixel unit includes a first transistor T1, a pre-storage capacitor Cs1, a second transistor T2, a holding capacitor Cs2 and a pixel electrode Clc;

[0015] The gate of the first transistor T1 is coupled to the row gate signal line Scan, the first source and drain of the first transistor T1 are coupled to the data signal line Data, the second source and drain of the first transistor T1 are coupled to one end of the pre-storage capacitor Cs1, and the other end of the pre-storage capacitor Cs1 is coupled to the common signal line Com;

[0016] The gate of the second transistor T2 is coupled to the transfer signal line Tran, the first source and drain of the second transistor T2 are coupled to the second source and drain of the first transistor T1, the second source and drain of the second transistor T2 are coupled to one end of the pixel electrode Clc, and the other end of the pixel electrode Clc is coupled to the common signal line Com.

[0017] Furthermore, the pixel unit also includes a third transistor T3, the gate of the third transistor T3 is coupled to the reset signal line Reset, the first source and drain of the third transistor T3 are coupled to the second source and drain of the second transistor T2, and the second source and drain of the third transistor T3 are coupled to the reference signal line Vref.

[0018] Furthermore, a common signal line Com is formed on the colored transparent conductive layer, and the colored transparent conductive layer and the transparent electrode form a pixel electrode Clc, and the pixel electrode Clc is an interdigitated pixel electrode.

[0019] Furthermore, the initial direction of the liquid crystal molecules in the liquid crystal molecule layer is parallel to the interdigitated pixel electrodes, and the liquid crystal molecules in the liquid crystal layer are positive liquid crystals.

[0020] Furthermore, the initial direction of the liquid crystal molecules in the liquid crystal molecule layer is perpendicular to the interdigitated pixel electrodes, and the liquid crystal molecules in the liquid crystal layer are negative liquid crystals.

[0021] Advantages of this utility model:

[0022] The utility model sets a plurality of transparent signal electrodes, inputs pulse signals to the transparent signal electrodes, so that the transparent signal electrodes can form a plurality of transverse electric fields during the backlight off stage of the pixel unit operation. The force exerted on the liquid crystal molecules by the plurality of transverse electric fields is improved, thereby reducing the full response time of the liquid crystal molecules.

[0023] The transparent signal electrode of the present invention can form multiple electric fields across layers, can form multiple lateral electric fields with the colored transparent conductive layer below, and can also form an electric field with the transparent electrode A and transparent electrode B above; thus, without increasing the number of transparent signal electrodes, multiple electric fields can still be formed using one transparent signal electrode, and multiple electric fields help to achieve the purpose of improving the response speed of liquid crystal molecules. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of the panel of the utility model;

[0025] Figure 2 This is a circuit diagram of a pixel unit of the present utility model;

[0026] Figure 3 Schematic diagram of the alignment of the positive liquid crystal of the present invention;

[0027] Figure 4 Schematic diagram of the force acting on the positive liquid crystal of the present invention;

[0028] Figure 5 Schematic diagram of the alignment of negative liquid crystals of the present invention;

[0029] Figure 6 This is a schematic diagram of the force acting on the negative liquid crystal of the present invention. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0031] It should be noted that the directions or positional relationships indicated by "left" and "right" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use, or are the directions or positional relationships commonly understood by those skilled in the art. Such terms are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the utility model.

[0032] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions therein can be combined with each other. Example

[0033] See Figure 1 The present invention provides a field sequential display pixel panel, comprising a transistor array substrate, a transparent conductive layer, and a liquid crystal molecule layer; the transistor array substrate comprises a plurality of pixel units, a transparent conductive layer is provided on the transistor array substrate, the transparent conductive layer comprises a colored transparent conductive layer and a plurality of transparent electrodes; the transistor array substrate is connected to the colored transparent conductive layer through a through hole penetrating through the insulating layer, a plurality of insulating layers are provided on the colored transparent conductive layer, a plurality of transparent electrodes are provided on the insulating layer; a liquid crystal molecule layer is provided on the plurality of transparent electrodes;

[0034] The transparent electrodes include a transparent electrode A and a transparent electrode B, which are arranged opposite to each other at the two ends of the lower surface of the liquid crystal molecule layer; a plurality of transparent signal electrodes are arranged between the colored transparent conductive layer and the plurality of insulating layers in the plurality of transparent electrodes, and the plurality of transparent signal electrodes include a first electrode, a second electrode and a third electrode.

[0035] like Figure 2 As shown, the pixel unit includes a first transistor T1, a pre-storage capacitor Cs1, a second transistor T2, a holding capacitor Cs2, a pixel electrode Clc and a third transistor T3; the gate of the first transistor T1 is coupled to the row gate signal line Scan, the first source and drain of the first transistor T1 are coupled to the data signal line Data, the second source and drain of the first transistor T1 are coupled to one end of the pre-storage capacitor Cs1, and the other end of the pre-storage capacitor Cs1 is coupled to the common signal line Com; the gate of the second transistor T2 is coupled to the transfer signal line Tran, the first source and drain of the second transistor T2 are coupled to the second source and drain of the first transistor T1, the second source and drain of the second transistor T2 are coupled to one end of the pixel electrode Clc, and the other end of the pixel electrode Clc is coupled to the common signal line Com; the gate of the third transistor T3 is coupled to the reset signal line Reset, the first source and drain of the third transistor T3 are coupled to the second source and drain of the second transistor T2, and the second source and drain of the third transistor T3 are coupled to the reference signal line Vref.

[0036] A common signal line Com is formed on the colored transparent conductive layer. When the transparent signal electrode receives a pulse signal, a voltage difference is formed between the transparent signal electrode and the colored transparent conductive layer. At this time, the first electrode and the colored transparent conductive layer form a first transverse electric field, the second electrode and the colored transparent conductive layer form a second transverse electric field and a third transverse electric field, and the third electrode and the transparent conductive layer form a fourth transverse electric field.

[0037] The colored transparent conductive layer and the transparent electrode form a pixel electrode Clc, the transparent electrode A and the transparent electrode B are electrically connected to the second transistor T2, and the transparent signal electrode receives an AC pulse signal of a preset period, so that the transparent electrode A can form a fifth transverse electric field with the first electrode, and the transparent electrode B can form a sixth transverse electric field with the third electrode.

[0038] When the pixel panel is working, the positive direction of the pixel always points to the light-emitting direction, that is, it is always parallel to the interdigitated pixel electrode. When the alignment direction of the liquid crystal molecules is the same as the positive direction of the pixel, the initial direction of the liquid crystal molecules in the liquid crystal molecular layer is parallel to the transistor array substrate. At this time, the liquid crystal molecules in the liquid crystal layer are positive liquid crystals.

[0039] like Figure 3 and Figure 5 As shown, in the backlight off stage, when the n-1 frame is a high grayscale and the n frame is a low grayscale, for example, L255→L64, since the liquid crystal molecules have reached a direction close to parallel to the electric field lines, the original electric field can actually exert a small torque on the liquid crystal molecules, and they can only slowly recover by relying on the viscosity and orientation of their own material properties; at this time, it takes a long time for the liquid crystal molecules to recover to the initial orientation direction, and a first transverse electric field, a second transverse electric field, a third transverse electric field, a fourth transverse electric field, a fifth transverse electric field and a sixth transverse electric field are formed through multiple transparent signal electrodes, the colored transparent conductive layer, the transparent electrode A and the transparent electrode B; the multiple transverse electric fields uniformly distributed in the liquid crystal molecule layer provide new torques to the liquid crystal molecules, causing the liquid crystal molecules to add deflection.

[0040] Because the actual panel is three-dimensional, and the transverse electric field is actually a parabola, such as Figure 1 As shown, the actual transverse electric field will form forces in three directions. The x-direction and y-direction within the plane are the directions of the electric field that actually generate the force. When the liquid crystal molecules are positive liquid crystals, the combined force of the x-direction and y-direction exerts a force on the liquid crystal molecules. At this time, the force in the x-direction is greater than the force in the y-direction.

[0041] Moreover, the liquid crystal molecules form a torque through the dipole moment generated by polarization in the electric field. The polarity of the dipole moment is related to the electric field. The direction of the torque is the same under positive and negative polarities. Therefore, the positive and negative polarity of the pulse signal applied to the transparent signal electrode has no effect on the actual torque. However, in order to avoid damage to the liquid crystal molecules caused by long-term polarization in one direction, the positive and negative polarities of the AC pulse signal are repeatedly alternating.

[0042] When the liquid crystal molecules are complex liquid crystals, the same logic can be applied, such as Figure 5 and Figure 6 The figure shows the working condition when the liquid crystal molecules are negative liquid crystals. The initial direction of the liquid crystal molecules in the liquid crystal molecule layer is perpendicular to the transistor array substrate. The liquid crystal molecules in the liquid crystal layer are negative liquid crystals. At this time, the combined force of the x and y directions in the lateral electric field exerts a force on the liquid crystal molecules. At this time, the force in the y direction is greater than the force in the x direction, so that the liquid crystal molecules can quickly return to the initial alignment direction when the backlight is turned off, that is, perpendicular to the interdigitated pixel electrode, thereby improving the response speed of the liquid crystal molecules and reducing the full response time of the liquid crystal molecules.

[0043] The utility model sets a plurality of transparent signal electrodes and inputs pulse signals to the transparent signal electrodes, so that the transparent signal electrodes can form a plurality of transverse electric fields in the backlight off stage. The force exerted on the liquid crystal molecules by the multiple transverse electric fields is improved, thereby reducing the full response time of the liquid crystal molecules.

[0044] The transparent signal electrode of the present invention can form multiple electric fields across layers, can form multiple lateral electric fields with the colored transparent conductive layer below, and can also form an electric field with the transparent electrode A and transparent electrode B above; thus, without increasing the number of transparent signal electrodes, multiple electric fields can still be formed using one transparent signal electrode, and multiple electric fields help to achieve the purpose of improving the response speed of liquid crystal molecules.

[0045] The above embodiments merely represent preferred implementations, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art may make various modifications and improvements without departing from the present invention, and these modifications and improvements are all within the scope of protection of the present invention.

Claims

1. A field sequential display pixel panel, characterized in that: It includes a transistor array substrate, a transparent conductive layer and a liquid crystal molecule layer; The transistor array substrate comprises a plurality of pixel units, and a transparent conductive layer is provided on the transistor array substrate; The transparent conductive layer includes a colored transparent conductive layer and a plurality of transparent electrodes; The transistor array substrate is connected to the color transparent conductive layer through the insulating layer via a through hole, a plurality of insulating layers are provided on the color transparent conductive layer, a plurality of transparent electrodes are provided on the insulating layers; a liquid crystal molecule layer is provided on the plurality of transparent electrodes; A plurality of transparent signal electrodes are provided in the plurality of insulating layers between the colored transparent conductive layer and the plurality of transparent electrodes.

2. The field sequential display pixel panel according to claim 1, wherein: The plurality of transparent signal electrodes include a first electrode, a second electrode and a third electrode; The first electrode and the colored transparent conductive layer form a first transverse electric field, the second electrode and the colored transparent conductive layer form a second transverse electric field and a third transverse electric field, and the third electrode and the colored transparent conductive layer form a fourth transverse electric field.

3. The field sequential display pixel panel according to claim 2, wherein: The plurality of transparent electrodes include a transparent electrode A and a transparent electrode B, wherein the transparent electrode A and the transparent electrode B are respectively arranged at two ends of the liquid crystal molecule layer; The transparent electrode A and the first electrode form a fifth transverse electric field, and the transparent electrode B and the third electrode form a sixth transverse electric field.

4. A field sequential display pixel panel according to any one of claims 2 or 3, characterized in that: The transparent signal electrode receives a pulse signal of a preset period, and the pulse signal is an AC signal.

5. The field sequential display pixel panel according to claim 4, wherein: The pixel unit includes a first transistor T1, a pre-storage capacitor Cs1, a second transistor T2, a holding capacitor Cs2 and a pixel electrode Clc; The gate of the first transistor T1 is coupled to the row gate signal line Scan, the first source and drain of the first transistor T1 are coupled to the data signal line Data, the second source and drain of the first transistor T1 are coupled to one end of the pre-storage capacitor Cs1, and the other end of the pre-storage capacitor Cs1 is coupled to the common signal line Com; The gate of the second transistor T2 is coupled to the transfer signal line Tran, the first source and drain of the second transistor T2 are coupled to the second source and drain of the first transistor T1, the second source and drain of the second transistor T2 are coupled to one end of the pixel electrode Clc, and the other end of the pixel electrode Clc is coupled to the common signal line Com.

6. The field sequential display pixel panel according to claim 5, characterized in that: The pixel unit further includes a third transistor T3 , a gate of the third transistor T3 coupled to the reset signal line Reset, a first source and drain of the third transistor T3 coupled to the second source and drain of the second transistor T2 , and a second source and drain of the third transistor T3 coupled to the reference signal line Vref.

7. The field sequential display pixel panel according to claim 5, characterized in that: A common signal line Com is formed on the color transparent conductive layer. The color transparent conductive layer and the transparent electrode form a pixel electrode Clc. The pixel electrode Clc is an interdigitated pixel electrode.

8. The field sequential display pixel panel according to claim 7, wherein: The initial direction of the liquid crystal molecules in the liquid crystal molecule layer is parallel to the interdigitated pixel electrodes, and the liquid crystal molecules in the liquid crystal molecule layer are positive liquid crystals.

9. The field sequential display pixel panel according to claim 7, wherein: The initial direction of the liquid crystal molecules in the liquid crystal molecule layer is perpendicular to the interdigitated pixel electrodes, and the liquid crystal molecules in the liquid crystal molecule layer are negative liquid crystals.

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