CN106226937A - Display device and preparation method thereof - Google Patents

Abstract

The present invention provides a display device and a manufacturing method thereof, which include an array substrate and a color filter substrate arranged in a box, and a liquid crystal layer is arranged between them, and the areas corresponding to each pixel of the array substrate and the color filter substrate include The reflective area and the transmissive area also include a first step and a second step, wherein the first step is arranged on the surface of the array substrate adjacent to the liquid crystal layer, and the second step is arranged on the surface of the color filter substrate adjacent to the liquid crystal layer On the surface. The first step and the second step are oppositely arranged in the reflection area, so that the thickness of the liquid crystal layer in the reflection area is half of the thickness in the transmission area. The display device provided by the present invention can improve the alignment of liquid crystal molecules at the junction of the transmissive area and the reflective area, thereby improving display quality.

Description

Display device and manufacturing method thereof

technical field

The present invention relates to the field of display technology, in particular to a display device and a manufacturing method thereof.

Background technique

In the liquid crystal display device, the transflective liquid crystal display adopts the transmissive and reflective designs at the same time, that is, it has a backlight source and a reflective layer at the same time. Good viewing quality under light or weak light environment, therefore, the transflective liquid crystal display has a wider application prospect.

FIG. 1 is a partial cross-sectional view of a conventional display device. FIG. 2 is a schematic diagram of an arrangement of liquid crystal molecules in a conventional display device. Please refer to FIG. 1 and FIG. 2 together. The display device includes an array substrate 1 and a color filter substrate 2 arranged opposite to each other, and a liquid crystal layer 3 is arranged between them, and the array substrate 1 and the color filter substrate 2 respectively correspond to each The area of the pixel includes a reflective area A and a transmissive area B, wherein, in the reflective area A, external ambient light is irradiated to the reflective metal surface in the reflective area A through the liquid crystal layer 3, and then reflected to the outside of the display device through the liquid crystal layer 3, and reach the human eye. In this way, the distance of the light in the reflective region A passing through the liquid crystal is twice the thickness of the liquid crystal, that is, the optical path of the reflective region A is twice the optical path of the transmissive region B.

In order to ensure that the optical path and phase of the transmissive area B and the reflective area A are consistent, a common practice is to set a step 4 on the surface of the array substrate 1 adjacent to the liquid crystal layer 3 and in the reflective area A. With the help of the step 4, the The thickness of the liquid crystal layer 3 in the reflection area A is reduced to half of the thickness of the liquid crystal layer 3 in the transmission area B, that is, the thickness of the liquid crystal layer 3 in the transmission area B is d, and the thickness of the liquid crystal layer 3 in the reflection area A is d/ 2. In this way, the distance of the light in the reflective area A passing through the liquid crystal layer 3 is d, which is the same as the distance of the light from the backlight passing through the liquid crystal layer 3 in the transmissive area B, so as to realize the optical path of the transmissive area B and the reflective area A consistent with phase.

However, as shown in Figure 2, due to the existence of the step 4, there is a large step difference between the transmissive region B and the reflective region A in the liquid crystal layer 3, resulting in the liquid crystal molecules at the junction of the transmissive region B and the reflective region A The arrangement is abnormal, as shown in the I region in Figure 2. Experiments have shown that due to the influence of the step difference between the transmissive area B and the reflective area A, after the display device is powered on, ellipsoidal light will appear in the junction area between the transmissive area B and the reflective area A, and finally light leakage will occur, thus affecting Display quality.

Contents of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art, and proposes a display device and a manufacturing method thereof, which can improve the alignment of liquid crystal molecules at the junction of the transmissive area and the reflective area, thereby Display quality can be improved.

In order to realize the purpose of the present invention, a display device is provided, which includes an array substrate and a color filter substrate arranged opposite to each other, a liquid crystal layer is arranged between the two, and the array substrate and the color filter substrate respectively correspond to each pixel. The area includes a reflection area and a transmission area, and also includes a first step and a second step, wherein the first step is arranged on the surface of the array substrate adjacent to the liquid crystal layer, and the second step is arranged on the surface of the array substrate On the surface of the color filter substrate adjacent to the liquid crystal layer; the first step and the second step are relatively arranged in the reflection area, so that the thickness of the liquid crystal layer in the reflection area is at the One-half of the thickness of the transmissive zone.

Preferably, the first step and the second step have the same thickness.

Optionally, the first step includes a bump for reflecting incident light from the environment.

Preferably, the bumps are made of metal materials.

Optionally, the second step includes a transparent color-resisting block.

As another technical solution, the present invention also provides a method for manufacturing a display device. The display device includes an array substrate and a color filter substrate arranged opposite to each other, and a liquid crystal layer is arranged between the two, and the array substrate and the color filter substrate The area of the color filter substrate corresponding to each pixel includes a reflective area and a transmissive area, and it is characterized in that the manufacturing method includes:

forming a first step on the surface of the array substrate adjacent to the liquid crystal layer;

forming a second step on the surface of the color filter substrate adjacent to the liquid crystal layer;

Wherein, the first step and the second step are oppositely arranged in the reflection area, so that the thickness of the liquid crystal layer in the reflection area is half of the thickness in the transmission area.

Preferably, the first step and the second step have the same thickness.

Optionally, the first step includes a bump for reflecting incident light from the environment.

Preferably, the bumps are made of metal materials.

Optionally, the second step includes a transparent color-resisting block.

The present invention has the following beneficial effects:

In the display device provided by the present invention, a first step is provided on the surface of the array substrate adjacent to the liquid crystal layer, a second step is provided on the surface of the color filter substrate adjacent to the liquid crystal layer, and the first step and the second step It is relatively arranged in the reflective area, so that the thickness of the liquid crystal layer in the reflective area is 1/2 of the thickness in the transmissive area, so that not only can the optical path and phase of the transmissive area and the reflective area be consistent, but also can reduce the thickness of the transmissive area. The level difference between the transmissive region and the reflective region can improve the arrangement order of the liquid crystal molecules at the junction of the transmissive region and the reflective region, thereby improving the display quality.

The manufacturing method of the display device provided by the present invention comprises setting a first step on the surface of the array substrate adjacent to the liquid crystal layer, setting a second step on the surface of the color filter substrate adjacent to the liquid crystal layer, and the first step and the liquid crystal layer. The second step is relatively arranged in the reflective area, so that the thickness of the liquid crystal layer in the reflective area is 1/2 of the thickness in the transmissive area, thereby not only ensuring that the optical path and phase of the transmissive area and the reflective area are consistent, but also reducing the The step difference between the transmission area and the reflection area is small, so that the arrangement order of the liquid crystal molecules at the junction of the transmission area and the reflection area can be improved, and the display quality can be improved.

Description of drawings

FIG. 1 is a partial cross-sectional view of an existing display device;

2 is a schematic diagram of the arrangement of liquid crystal molecules in an existing display device;

FIG. 3 is a partial cross-sectional view of a display device provided by an embodiment of the present invention;

FIG. 4 is a schematic diagram of liquid crystal molecule arrangement in a display device provided by an embodiment of the present invention.

detailed description

In order for those skilled in the art to better understand the technical solution of the present invention, the display device provided by the present invention and its manufacturing method will be described in detail below with reference to the accompanying drawings.

FIG. 3 is a partial cross-sectional view of a display device provided by an embodiment of the present invention. FIG. 4 is a schematic diagram of liquid crystal molecule arrangement in a display device provided by an embodiment of the present invention. Please refer to FIG. 3 and FIG. 4 together. The display device includes an array substrate 1 and a color filter substrate 2 arranged opposite to each other, and a liquid crystal layer 3 is arranged between them, and the array substrate 1 and the color filter substrate 2 respectively correspond to each The area of the pixel includes a reflective area A and a transmissive area B.

The display device also includes a first step 6 and a second step 5, wherein the first step 6 is arranged on the surface of the array substrate 1 adjacent to the liquid crystal layer 3 (that is, the upper surface of the array substrate 1 in FIG. The step 5 is arranged on the surface of the color filter substrate 2 adjacent to the liquid crystal layer 3 (ie, the lower surface of the color filter substrate 2 in FIG. 3 ). The first step 6 and the second step 5 are relatively arranged in the reflective area A, so that the thickness of the liquid crystal layer 3 in the reflective area A is 1/2 of the thickness in the transmissive area, that is, the thickness of the liquid crystal layer 3 in the transmissive area B The thickness is d, and the thickness of the liquid crystal layer 3 in the reflective area A is d/2. In this way, the distance for the light in the reflective area A to pass through the liquid crystal layer 3 is d, and in the transmissive area B, the light from the backlight passes through the liquid crystal layer 3 The distances are the same, so that the optical path and phase of the transmissive area B and the reflective area A are consistent.

Moreover, the sum of the thickness d2 of the first step 6 and the thickness d1 of the second step 5 is equal to d/2, which can reduce the transmissive area B and the reflective area A compared with the thickness of the step in the prior art which is d/2 The step difference between them can improve the alignment of the liquid crystal molecules at the junction of the transmissive region B and the reflective region A, as shown in the II region in Figure 4, at the junction of the transmissive region B and the reflective region A The arrangement of the liquid crystal molecules is orderly and consistent with the arrangement of the liquid crystal molecules in other regions, thereby improving the display quality.

Preferably, the thickness d2 of the first step 6 is the same as the thickness d1 of the second step 5, that is, the thickness d2 of the first step 6 and the thickness d1 of the second step 5 are both d/4, which can make the transmission area B and the The reflective area A has the smallest level difference at the first step 6, and similarly, the transmissive area B and the reflective area A have the smallest level difference at the second step 5, which is most beneficial to improving the alignment of liquid crystal molecules. Of course, in practical applications, the thickness d2 of the first step 6 and the thickness d1 of the second step 5 can also be designed to be unequal according to specific circumstances, as long as the sum of the thicknesses of the two is equal to d/2.

In practical applications, optionally, the above-mentioned first step 6 includes a bump for reflecting incident light from the environment. The bump is preferably made of metal material to achieve good reflection.

In practical applications, optionally, the above-mentioned second step 5 includes a transparent color-resist block, so as not to affect the transmittance of the pixel.

As another technical solution, the present invention also provides a method for manufacturing a display device. The display device includes an array substrate and a color filter substrate arranged opposite to each other, a liquid crystal layer is arranged between the two, and the array substrate and the color filter substrate Areas each corresponding to each pixel include a reflective area and a transmissive area.

The production method includes:

Step 1, forming a first step on the surface of the array substrate adjacent to the liquid crystal layer.

Step 2, forming a second step on the surface of the color filter substrate adjacent to the liquid crystal layer.

Wherein, the first step and the second step are relatively arranged in the reflection area, so that the thickness of the liquid crystal layer in the reflection area is half of the thickness in the transmission area. In this way, not only can the optical path and phase of the transmission area and the reflection area be consistent, but also the step difference between the transmission area and the reflection area can be reduced, so that the order of the liquid crystal molecules at the junction of the transmission area and the reflection area can be improved. performance, which in turn can improve display quality.

Preferably, the first step and the second step have the same thickness. This can minimize the step difference between the transmissive region and the reflective region at the first step, and similarly, the step difference between the transmissive region and the reflective region at the second step is also the smallest, which is most beneficial to improving the alignment of liquid crystal molecules. Of course, in practical applications, the thickness of the first step and the thickness of the second step may also be designed to be unequal according to specific circumstances, as long as the sum of the thicknesses of the two is equal to each other.

In practical applications, optionally, the first step includes a bump for reflecting incident light from the environment. The bump is preferably made of metal material to achieve good reflection.

In practical applications, optionally, the above-mentioned second step includes a transparent color-resist block, so as not to affect the transmittance of the pixel.

It can be understood that, the above embodiments are only exemplary embodiments adopted for illustrating the principle of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also regarded as the protection scope of the present invention.

Claims (10)

1. A display device, comprising an array substrate and a color filter substrate arranged in a box, a liquid crystal layer is arranged between the two, and the respective regions of the array substrate and the color filter substrate corresponding to each pixel include a reflection area and a transmission area The area is characterized in that it further includes a first step and a second step, wherein the first step is arranged on the surface of the array substrate adjacent to the liquid crystal layer, and the second step is arranged on the color on the surface of the film substrate adjacent to the liquid crystal layer; The first step and the second step are oppositely arranged in the reflection area, so that the thickness of the liquid crystal layer in the reflection area is half of the thickness in the transmission area. 2. The display device according to claim 1, wherein the first step and the second step have the same thickness. 3. The display device according to claim 1, wherein the first step comprises a bump for reflecting incident light from the environment. 4. The display device according to claim 3, wherein the bumps are made of metal materials. 5. The display device according to claim 1, wherein the second step comprises a transparent color resist block. 6. A manufacturing method of a display device, the display device comprising an array substrate and a color filter substrate arranged in a pair of boxes, a liquid crystal layer is arranged between the two, and the array substrate and the color filter substrate correspond to each pixel respectively The area includes a reflective area and a transmissive area, wherein the manufacturing method includes: forming a first step on the surface of the array substrate adjacent to the liquid crystal layer; forming a second step on the surface of the color filter substrate adjacent to the liquid crystal layer; Wherein, the first step and the second step are oppositely arranged in the reflection area, so that the thickness of the liquid crystal layer in the reflection area is half of the thickness in the transmission area. 7. The manufacturing method of the display device according to claim 6, wherein the first step and the second step have the same thickness. 8. The manufacturing method of the display device according to claim 6, wherein the first step comprises a bump for reflecting incident light from the environment. 9. The manufacturing method of the display device according to claim 8, wherein the bumps are made of metal materials. 10. The method for manufacturing a display device according to claim 6, wherein the second step comprises a transparent color-resist block.