TWI578062B - Liquid crystal display panel and a method for adjusting the cell gap of the liquid crystal display panel - Google Patents

Description

Liquid crystal display panel and method for adjusting liquid crystal gap of liquid crystal display panel

The present invention relates to a liquid crystal display panel and a method of adjusting a liquid crystal gap of a liquid crystal display panel, and more particularly to a liquid crystal display panel having a mechanism for adjusting a liquid crystal gap.

Conventional liquid crystal display panels use a fixed main spacer to adjust the liquid crystal gap of the liquid crystal display panel. In general, the design of the main spacer is fixed, and the material of the main spacer at different positions is the same. Although this method can make the main spacer provide stable and consistent mechanical characteristics, if the liquid crystal gap of the non-display area of the liquid crystal display panel is abnormal and the brightness of the display is uneven (for example, Newton's ring), if the liquid crystal gap is to be adjusted. In order to improve the brightness unevenness, the mask of the main spacer must be reworked to change the density or size of the main spacer, and moreover, the mask of the black matrix layer and the mask of the color filter layer must be further reproduced. To adjust the mechanical properties of the main spacer.

One of the objectives of the present invention is to provide a liquid crystal display panel and a method for adjusting the liquid crystal gap of the liquid crystal display panel, wherein the substrates of the spacers are not completely identical, thereby improving the chromatic aberration caused by the uneven liquid crystal gap in the conventional liquid crystal display panel. problem.

An embodiment of the invention provides a liquid crystal display panel, wherein the liquid crystal display panel has a display area and a non-display area surrounding the display area. The liquid crystal display panel includes a first substrate, a second substrate, a liquid crystal layer, a sealant, a plurality of first support portions, a plurality of second support portions, and a plurality of third support portions. The second substrate is disposed opposite to the first substrate. The liquid crystal layer is disposed between the first substrate and the second substrate. The sealant is disposed between the first substrate and the second substrate in the non-display area, and the sealant surrounds the liquid crystal layer. The first supporting portion is disposed between the first substrate and the second substrate in the display area, and each of the first supporting portions respectively includes a first bottom layer and a first spacer disposed on the first substrate surface, wherein the first bottom layer comprises A black matrix layer, a first color filter layer, and a protective layer. The second supporting portion is disposed between the first substrate and the second substrate in the display area, and each of the second supporting portions includes a second bottom layer and a second spacer respectively disposed on the first substrate surface, wherein the second bottom layer comprises Black matrix layer and protective layer. The third supporting portion is disposed between the first substrate and the second substrate in the display area, and each of the third supporting portions includes a third bottom layer and a third spacer respectively disposed on the first substrate surface, wherein the third bottom layer comprises a black matrix layer, a first color filter layer, a second color filter layer, and a protective layer. The total thickness of the first bottom layer, the second bottom layer and the third bottom layer are substantially the same, and the heights of the first spacer, the second spacer and the third spacer are substantially the same.

Another embodiment of the present invention provides a method for adjusting a liquid crystal gap of a liquid crystal display panel, comprising: providing a liquid crystal display panel having a display area and a non-display area surrounding the display area, the liquid crystal display panel comprising a substrate, a protective layer, a sealant, a first color filter layer, at least one spacer, and at least one sealant spacer, wherein the protective layer is disposed on the surface of the substrate, the sealant is located in the non-display area, and is disposed on the protective layer, the first color filter layer Between the surface of the substrate and the protective layer, the spacer is disposed on the surface of the protective layer and located in the display area, and the spacer and the partial protective layer disposed under the portion and the first color filter layer constitute the first supporting portion, and the frame The glue spacer is disposed on the surface of the protective layer and located in the sealant; measuring the distance from the upper surface of the sealant spacer to the surface of the substrate to obtain a first total thickness; measuring the distance from the upper surface of the first support portion to the surface of the substrate, a total thickness; according to the difference between the first total thickness and the second total thickness, at least one second support portion is provided or at least one third support portion is provided on the sealant The method of providing the second support portion or providing the third support portion between the first support portions includes: when the first total thickness is greater than the second total thickness, providing the second support portion on the sealant and the first support portion And the elastic recovery rate of the second support portion is greater than the elastic recovery rate of the first support portion; and when the first total thickness is less than the second total thickness, the third support portion is provided on the sealant and the first support portion And the elastic recovery rate of the third support portion is smaller than the elastic recovery rate of the first support portion.

The invention can effectively reduce the variation of the liquid crystal gap by changing the arrangement of the underlying material of the support portion and the support portion, and further obtain a liquid crystal display panel having a relatively uniform liquid crystal gap, thereby improving the liquid crystal gap in the conventional liquid crystal display panel. Both cause a problem of chromatic aberration. In addition, since the invention only needs to change the configuration of each support portion to achieve the effect of improving the chromatic aberration, it is only necessary to adjust the sharing condition of the reticle without the need to reproduce the reticle of the spacer, the mask of the black matrix layer, and The mask of the color filter layer can achieve the effect of adjusting the liquid crystal gap.

The present invention will be further understood by the following detailed description of the preferred embodiments of the invention, .

Please refer to Figure 1 and Figure 2. 1 is a cross-sectional view showing a first embodiment of a liquid crystal display panel of the present invention, and FIG. 2 is a partially enlarged schematic view showing a first substrate of the liquid crystal display panel shown in FIG. 1. The liquid crystal display panel 10 of the present invention has a display area R1 and a non-display area R2. The non-display area R2 is disposed around the periphery of the display area R1. The display area R1 is an area where the liquid crystal display panel 10 displays images, and the non-display area R2 can be set, for example. Peripheral wires. Furthermore, the liquid crystal display panel 10 further includes a sealant A disposed in the non-display area R2. Specifically, the liquid crystal display panel 10 includes a first substrate G1, a second substrate G2, a liquid crystal layer M, and a sealant A. The second substrate G2 and the first substrate G1 are disposed opposite to each other, and the liquid crystal layer M is disposed on the first substrate G1. Between the second substrate G2 and the second substrate G2, there is a liquid crystal gap MD surrounded by the sealant A. The first substrate G1 and the second substrate G2 may respectively comprise a transparent substrate such as a glass substrate, a plastic substrate or other hard or flexible substrate. For example, the second substrate G2 and the first substrate G1 may be an array substrate and a pair respectively. To the substrate, an active device layer U may be disposed on the second substrate G2. The active device layer U includes, for example, a plurality of thin film transistors arranged in an array on the surface of the second substrate G2, and the inner surface of the first substrate G1 may be provided with color. Filter layer CF. In addition, the liquid crystal display panel 10 further includes a black matrix layer BM and a protective layer OC disposed on the first substrate G1, wherein the black matrix layer BM is disposed between the color filter layer CF and the first substrate G1, and the protective layer OC covers the color. The filter layer CF and the black matrix layer BM. It should be noted that the color filter layer CF and the black matrix layer BM may be patterned layers, but FIG. 1 is only illustrated by a flat film layer. Furthermore, the liquid crystal layer M includes a plurality of liquid crystal molecules, and the sealant A may include a plurality of sealant spacers (not shown in FIGS. 1 and 2), for example, a gold ball having a specific size and a spacer ball of other materials. Or other shapes of spacers, but not limited to this. The liquid crystal display panel 10 further includes a plurality of spacers P (only shown in FIG. 2) disposed on the protective layer OC and located between the protective layer OC and the active device layer U for providing support for the liquid crystal layer M gap.

As shown in FIG. 2, according to the liquid crystal display panel 10 of the present invention, in a region other than the sealant A in the display region R1 and the non-display region R2, the color filter layer CF may include the first color filter layer CF1 and the second color. The filter layer CF2 is disposed on the surface of the black matrix layer BM, and the color filter layer CF may further include a third color filter layer (not shown) disposed on the second color filter layer CF2. The first color filter layer CF1, the second color filter layer CF2, and the third color filter layer may have different colors respectively. For example, the first color filter layer CF1 may be a red filter layer and a second color filter. The layer CF2 may be a green filter layer and the third color filter layer may be a blue filter layer, but not limited thereto. For example, the first color filter layer CF1 may also be a green filter layer or a blue filter. Floor. It should be noted that the present invention is not limited to FIG. 2, and the first color filter layer CF1 and the second color filter layer CF2 are changed in configuration according to design requirements. For example, in a variant embodiment, the second color filter The light layer CF2 may not cover the first color filter layer CF1.

As shown in FIG. 2, the liquid crystal display panel 10 of the present invention includes a plurality of first support portions C1, a plurality of second support portions C2, and a plurality of third support portions C3 disposed in the display region R1 and the non-display region R2. Between the first substrate G1 and the second substrate G2 in the region other than A, in order to clearly show the relationship between the film layers of the first support portion C1, the plurality of second support portions C2, and the plurality of third support portions C3 of the present invention, The first support portion C1, the second support portion C2, and the third support portion C3 are not shown in FIG. 1, but the first support portion C1 and the second support portion C2 of the present invention are illustrated in FIG. An enlarged schematic view of each of the third supporting portions C3, and elements such as the second substrate G2 and the liquid crystal layer M2 are omitted. The first supporting portion C1 includes a first bottom layer B1 and a first spacer P1 respectively disposed on the surface of the first substrate G1, and the second supporting portion C2 includes a second bottom layer B2 and a second spacer P2 respectively disposed at the first step. The surface of the substrate G1, and the third support portion C3 includes a third bottom layer B3 and a third spacer P3 respectively disposed on the surface of the first substrate G1, wherein the first spacer P1, the second spacer P2, and the third spacer P3 is the aforementioned spacer P. In the first support portion C1, the first bottom layer B1 includes a black matrix layer BM, a first color filter layer CF1, and a protective layer OC, that is, the first support portion C1 is stacked by the first spacer P1 and below The black matrix layer BM, the first color filter layer CF1, and the protective layer OC are formed. In the second support portion C2, the second bottom layer B2 includes a black matrix layer BM and a protective layer OC, but does not include the color filter layer CF, that is, the second support portion C2 is only composed of the second spacer P2 and the lower portion thereof. The stacked black matrix layer BM and the protective layer OC are formed. In the third support portion C3, the third bottom layer B3 includes a black matrix layer BM, a first color filter layer CF1, a second color filter layer CF2, and a protective layer OC, that is, the third support portion C3 is third. The spacer P3 is composed of a black matrix layer BM, a first color filter layer CF1, a second color filter layer CF2, and a protective layer OC stacked therebelow. As can be seen from the above, the first spacer P1 of the first support portion C1 overlaps the first color filter layer CF1 in the direction perpendicularly projected on the first substrate G1, and the third spacer P3 of the third support portion C3 is vertically projected. The first color filter layer CF1 and the second color filter layer CF2 overlap in the direction of the first substrate G1, and the second spacer P2 of the second support portion C2 is not vertically projected in the direction of the first substrate G1. Overlap any color filter layer CF. It should be noted that, according to the present invention, the stacked layers in the first bottom layer B1 and the second bottom layer B2 and the third bottom layer B3 are not completely identical, but the total thickness of the three layers is substantially the same, and the first spacer P1 is The heights of the second spacer P2 and the third spacer P3 are substantially the same. In other words, the total thickness of the first support portion C1, the second support portion C2, and the third support portion C3 are substantially the same. It should be noted that the thickness difference or height difference between the above-mentioned "total thickness is substantially the same" or "substantially the same height" is less than or equal to 0.3 micrometers, or less than or equal to 5% of the total thickness.

In general, the material of the protective layer OC may include polymethyl methacrylate (PMMA), polyimine (PI), decane, acryl (Acryl), epoxy (Epoxy), phenolic resin ( Novolak) or other suitable material. Since the material of the protective layer OC does not contain a pigment and does not require a large amount of a dispersing agent, the polymer in the material has a good bonding ability, for example, a cross-link bond between the polymers, so The protective layer OC may have better mechanical properties, such as a high elastic recovery ratio. On the other hand, the material of the color filter layer CF usually contains a pigment and a dispersant, so that the bond between the polymers in the material is affected and has a low elastic recovery. As can be seen from the above, when the color filter layer CF is included in the composition of the underlayer, the elastic recovery rate is lowered, and the thicker the color filter layer CF in the underlayer, the lower the elastic recovery rate. Therefore, in the embodiment, the second bottom layer B2 has the highest elastic recovery rate because it does not have any color filter layer CF, and the first bottom layer B1 has a lower elastic recovery rate due to the first color filter layer CF1. The third bottom layer B3 has a lower elastic recovery rate due to the first color filter layer CF1 and the second color filter layer CF2. As can be seen from the above, since the elastic recovery rate of the third bottom layer B3 is smaller than the elastic recovery rate of the first bottom layer B1, and the elastic recovery rate of the first bottom layer B1 is smaller than the elastic recovery rate of the second bottom layer B2, the first spacer P1 is When the heights of the second spacer P2 and the third spacer P3 are substantially the same, the elastic recovery rate of the third support portion C3 is smaller than the elastic recovery rate of the first support portion C1, and the elastic recovery rate of the first support portion C1 It is smaller than the elastic recovery rate of the second support portion C2. For example, the difference between the elastic recovery rate of the third support portion C3 and the elastic recovery rate of the first support portion C1 may be greater than or equal to 3%, and the elastic recovery rate of the first support portion C1 and the elasticity of the second support portion C2. The difference in response rate can also be greater than or equal to 3%, but not limited to this. Accordingly, the first support portion C1, the second support portion C2, and the third support portion C3 of the display panel 10 of the present invention have substantially the same total thickness, but have different elastic recovery rates, and thus can be used in the display area. The first support portion C1, the second support portion C2, and the third support portion C3 are disposed in different regions of R1 to adjust the pressure tolerance of each region of the liquid crystal display panel 10 and the panel elastic recovery rate. It is to be noted that, since the main difference between the first support portion C1, the second support portion C2 and the third support portion C3 is the number of layers of the color filter layer in the bottom layer, only the color filter layer needs to be adjusted in the process. The first, second and third bottom layers B1, B2, B3 can be easily fabricated by the position of the mask. In other words, the invention does not need to reproduce the mask of each component in the support portion, and the existing mask can be utilized. At least three supports having different elastic recovery rates are produced.

How to adjust the liquid crystal gap of the liquid crystal display panel and improve the overall mechanical strength of the liquid crystal display panel by further applying the configuration of the first support portion, the second support portion and the third support portion in the liquid crystal display panel of the present invention, Introduced in order.

First, a specific embodiment in which the liquid crystal display panel of the present invention adjusts the liquid crystal gap of the liquid crystal display panel by using the arrangement of the first support portion C1, the second support portion C2, and the third support portion C3 will be described. Please refer to FIG. 3, which is a schematic diagram showing the configuration of the support portion of the first embodiment of the liquid crystal display panel of the present invention. As shown in FIG. 3, in the present embodiment, the second support portion C2 and the third support portion C3 of the liquid crystal display panel 10 are arranged adjacent to each other in a manner adjacent to the sealant A, and are annularly surrounded by the display portion R1. A support portion C1. In this embodiment, the second support portion C2 and the third support portion C3 having different elastic recovery rates are arranged at intervals to help reduce the gap between the first substrate G1 and the second substrate G2 adjacent to the sealant A. The liquid crystal display panel 10 having a uniform liquid crystal gap MD is obtained by the variation of the liquid crystal gap MD (see FIG. 1). Therefore, the problem of chromatic aberration due to uneven liquid crystal gap in the conventional liquid crystal display panel can be improved.

The liquid crystal display panel of the present invention is not limited to the above embodiment. Hereinafter, liquid crystal display panels of other preferred embodiments of the present invention will be described in order, and in order to facilitate the comparison of the differences of the embodiments and simplify the description, the same components are denoted by the same reference numerals in the following embodiments, and The differences between the embodiments will be mainly described, and the repeated parts will not be described again.

Please refer to FIG. 4, which is a schematic diagram showing the configuration of the support portion of the second embodiment of the liquid crystal display panel of the present invention. As shown in FIG. 4, in the liquid crystal display panel 20, the second support portion C2 is disposed adjacent to the four corners of the sealant A, and the first support portion C1 is disposed adjacent to the sealant A and the second support portion C2, and is annular. Surrounding the third support portion C3 disposed in the display area R1 (not shown in FIG. 4), in other words, the first support portion C1 adjacent to the side of the sealant A is disposed on the third support portion C3 and the sealant A The first support portion C1 between and adjacent to the second support portion C2 is disposed between the third support portion C3 and the second support portion C2. From the sealant A to the central region of the display area R1, the second support portion C2, the first support portion C1 and the third support portion C3 are sequentially disposed, so that the elastic recovery rate of the display panel 20 from the periphery to the center is gradually reduced. This arrangement can improve the color unevenness and the Newton's ring phenomenon caused when the liquid crystal gap MD is abnormal at the corner of the liquid crystal display panel 20. The structure of the present embodiment can be applied to the case where the liquid crystal gap MD of the four corners of the liquid crystal display panel 20 is too small, and the elastic recovery rate of the second support portion C2 can be designed to be greater than the elastic recovery rate of the first support portion C1 by about 3%. The elastic recovery rate of the first support portion C1 is greater than about 3% of the elastic recovery ratio of the third support portion C3, so as to improve the problem that the liquid crystal gap MD is abnormal at the corner of the liquid crystal display panel 20, but not limited thereto.

Referring to FIG. 5, FIG. 5 is a schematic diagram showing the configuration of a support portion according to a variation of the second embodiment of the liquid crystal display panel of the present invention. As shown in FIG. 5, in the liquid crystal display panel 20' of the present embodiment, the positions of the third support portion C3 and the second support portion C2 are interchanged, that is, the third portion. The support portion C3 is disposed adjacent to the four corners of the sealant A, and the first support portion C1 is disposed adjacent to the sealant A and the third support portion C3, and is annularly surrounding and disposed in the display region R1 (not shown in FIG. 5). Second support portion C2. In other words, the first support portion C1 adjacent to the side of the sealant A is disposed between the second support portion C2 and the sealant A, and the first support portion C1 adjacent to the third support portion C3 is disposed on the second support. Between the portion C2 and the third support portion C3. From the sealant A to the central region of the display area R1, the third support portion C3, the first support portion C1 and the second support portion C2 are sequentially disposed, so that the elastic recovery rate of the display panel 20 from the periphery to the center is gradually increased. This arrangement can also improve the color unevenness and the Newton's ring phenomenon caused by the abnormality of the liquid crystal gap MD in the corner of the liquid crystal display panel 20, and is particularly applicable to the case where the liquid crystal gap MD of the four corners of the liquid crystal display panel 20 is excessively large. The elastic recovery rate of the second support portion C2 is greater than about 3% of the first support portion C1, and the elastic recovery rate of the first support portion C1 is greater than the elastic response rate of the third support portion C3. %, in order to improve the problem that the liquid crystal gap MD is abnormal at the corner of the liquid crystal display panel 20, but not limited thereto.

Please refer to FIG. 6. FIG. 6 is a schematic diagram showing the configuration of the support portion of the third embodiment of the liquid crystal display panel of the present invention. As shown in FIG. 6, the liquid crystal display panel 30 is a curved liquid crystal display panel having a center line N, and the display panel 30 has a center line N as a curved surface axis. The second support portion C2 of the embodiment is disposed along the center line N and the two sides of the center line N, and the first support portion C1 and the third support portion C3 are arranged at intervals in the sealant A and the second support portion C2. between. Specifically, when a curved liquid crystal display panel is generally produced, a flat liquid crystal display panel is first formed, and then the flat liquid crystal display panel is bent to form a curved liquid crystal display panel. In this case, the spacers on both sides of the center line N and the center line N are subjected to a large degree of pressing, and thus the liquid crystal gap MD is unevenly generated. Therefore, the elastic recovery rate is better in this embodiment. The two supporting portions C2 are disposed on both sides of the center line N and the center line N to help improve the uneven brightness of the curved display panel.

Please refer to FIG. 7. FIG. 7 is a schematic diagram showing the configuration of a support portion according to a first variation of the third embodiment of the liquid crystal display panel of the present invention. As shown in FIG. 7, in the liquid crystal display panel 30', the third support portion C3 is disposed along the center line N, and the second support portion C2 is two along the center line N, as shown in FIG. The side is disposed in at least two straight rows, and the first support portion C1 is disposed between the sealant A and the second support portion C2 and arranged in at least two straight rows in a direction parallel to the center line N. According to the embodiment of the present invention, when the liquid crystal gap MD is large due to the bending of the panel near the center line N, the third support portion C3 having a small elastic recovery rate is disposed on the center line N, and the liquid crystal display panel 30' is adjacent to the peripheral region. The liquid crystal gap MD is supported by the sealant A, and has a relatively small gap size. Therefore, the first support portion C1 is disposed, and the second support portion C2 is disposed on both sides of the center line N as a buffer to provide a liquid crystal gap MD. Better support effect, and thus improve the uneven display brightness of the curved display panel.

Please refer to FIG. 8. FIG. 8 is a schematic diagram showing the configuration of a support portion according to a second variation of the third embodiment of the liquid crystal display panel of the present invention. As shown in FIG. 8, in the liquid crystal display panel 30'' of the present variation embodiment, the second support portion C2 is disposed along the center line N, and the third support portion C3 is disposed along both sides of the center line N. The first support portion C1 is disposed between the sealant A and the third support portion C3 and arranged in a straight line in a direction parallel to the center line N. According to the embodiment of the present invention, when the liquid crystal gap MD is small due to the bending of the vicinity of the center line N, the second support portion C2 having a large elastic recovery rate is disposed on the center line N, and the portion adjacent to the sealant A is still set first. The support portion C1 and the third support portion C3 are disposed between the first support portion C1 and the second support portion C2 to provide a better liquid crystal gap MD supporting effect.

Referring to FIG. 9, FIG. 9 is a schematic diagram showing the configuration of a support portion according to a third variation of the third embodiment of the liquid crystal display panel of the present invention. As shown in FIG. 9, in the liquid crystal display panel 30"', the second support portion C2 is disposed along the center line N, and the first support portion C1 and the third support portion C3 are shown in FIG. The spacers are arranged between the sealant A and the second support portion C2. With the above configuration, the supporting effect and the elastic recovery ratio of the entire liquid crystal gap MD of the liquid crystal display panel 30''' can be made uniform.

The present invention further provides a method of adjusting a liquid crystal gap of a liquid crystal display panel by using support portions having different underlayers. Please refer to FIG. 10 to FIG. 15 . FIG. 10 is a flowchart of a method for adjusting a liquid crystal gap of a liquid crystal display panel according to the present invention, and FIGS. 11 to 15 illustrate a method for adjusting a liquid crystal gap of a liquid crystal display panel according to the present invention. A partial schematic view of a panel structure in which, in order to make the illustration simple and clear, only the first substrate and a part of the film layer and the surface thereof and the second substrate are illustrated in FIGS. 11 to 15 . As shown in FIG. 10 and FIG. 11 , the method for adjusting the liquid crystal gap of the liquid crystal display panel according to the present invention firstly performs step S1 to provide a liquid crystal display panel 10 ′, wherein the liquid crystal display panel 10 ′ is a semi-finished product, and may have substantially The structure shown in FIG. 1 includes, for example, a first substrate G1, a second substrate G2, an active device layer U, a liquid crystal layer M, a protective layer OC, a color filter layer CF, at least one spacer P, and a black matrix layer BM. And a sealant A (partial component is not shown in FIG. 11), etc., wherein the protective layer OC is disposed on the surface of the first substrate G1, and the color filter layer CF is disposed between the first substrate G1 and the protective layer OC, and the spacer P is disposed on the surface of the protective layer OC and located in the display region R1, and the sealant A is disposed on the surface of the protective layer OC and located in the non-display region R2. Further, the liquid crystal display panel 10' may further include a patterned black matrix layer BM disposed between the color filter layer CF and the first substrate G1. In general, since the display area R1 of the liquid crystal display panel 10' is provided with a pixel array, a single color filter layer CF of a plurality of colors in the display area R1 corresponds to each sub-pixel in the pixel array. For example, in FIG. 11, the first color filter layer CF1 is taken as an example, and the spacer P and the partial protective layer OC, the partial first color filter layer CF1, and the selective black matrix layer BM disposed under the display are displayed. The first support portion C1 is formed in the region R1. As described in the foregoing embodiment, the film laminate structure under the spacer P is regarded as the first underlayer B1, including the protective layer OC, the portion of the first color filter layer CF1, and the selective layer. Black matrix layer BM. Since most of the protective layer OC in the display region R1 is overlaid on the color filter layer CF, the protective layer OC in the display region R1 maintains its flatness with almost no height drop, and the protective layer OC is visible in the display region R1. In order to have the function of a flat layer, and when the film laminate structure under each spacer P in the display region R1 is the same as the first support portion C1, only the protective layer OC, a color filter layer CF and a selective black matrix layer. In the case of BM, then the stack of these spacers P and the underlying film layer has substantially the same mechanical strength, elastic recovery and thickness as the first support portion C1. On the other hand, in the non-display area R2 or the sealant A, since there is no color filter layer CF under the protective layer OC, the thickness from the surface of the protective layer OC to the surface of the first substrate G1 is higher than that of the display region R1. The total thickness of the layer is small, that is, the thickness between the surface of the protective layer OC and the first substrate G1 is slightly different between the display region R1 and the sealant A or the non-display region R2 (this difference is not shown in Fig. 11). In other words, if the protective layer OC between the sealant A and the first substrate G1 and the selective black matrix layer BM are regarded as the fourth underlayer B4, the thickness of the first underlayer B1 is greater than the thickness of the fourth underlayer B4. . The above situation causes the liquid crystal display panel 10' to have liquid crystal gaps MD of different sizes in the display region R1 and the non-display region R2, thereby affecting the display quality of the liquid crystal display panel 10', resulting in uneven brightness. Therefore, in order to homogenize the liquid crystal gap MD as much as possible, a rigid frame spacer A1 such as a spacer ball or other shaped spacer may be provided in the sealant A, as shown in FIG. The material of the sealant spacer A1 is exemplified by gold, cerium oxide, polymethyl methacrylate (PMMA), polyimine (PI) or other suitable materials, but not limited thereto. In addition, when setting the sealant spacer A1, the height difference between the fourth bottom layer B4 of the sealant A and the first bottom layer B1 of the display area R1 should be considered to select an appropriately sized sealant spacer A to effectively reduce The difference in height of the liquid crystal gap MD between the display area R1 and the non-display area R2. However, since the size of the sealant spacer A1 is limited, even if the appropriate size of the sealant spacer A1 is provided in the sealant A, the liquid crystal gap between the display area R1 and the non-display area R2 cannot be made. The MD is exactly the same.

Therefore, the method of the present invention achieves the purpose of adjusting the liquid crystal gap MD by using the following steps S2 to S6. After step S1, steps S2 and S3 can be performed separately and refer to FIG. 12 at the same time. In step S2, the distance from the upper surface of the sealant spacer A1 to the surface of the first substrate G1 is measured to obtain a first total thickness T1. In addition, step S3 is performed to measure the distance from the upper surface of the first support portion C1 to the surface of the first substrate G1 to obtain a second total thickness T2. It should be noted that the present invention does not limit the execution sequence of step S2 and step S3, and may select step S2 or step S3 according to actual needs. Next, step S4 is performed to calculate a difference between the first total thickness T1 and the second total thickness T2, and according to the difference, at least one second supporting portion C2 is provided or at least one third supporting portion C3 is provided on the sealant. A is between the first support portion C1. As shown in FIG. 12, if the size of the sealant spacer A1 is large, for example, the particle size of the sealant spacer A1 is larger than the height of the first spacer P1, the first total thickness T1 is greater than the second total thickness T2. That is, when the difference between the first total thickness T1 and the second total thickness T2 is greater than zero, step S5 is performed. As shown in FIG. 13, at least one second supporting portion C2 is provided on the sealant A and the first support. The elastic recovery rate/mechanism between the portions C1 and the second support portion C2 is greater than the elastic recovery rate/mechanical characteristics of the first support portion C1. In detail, when the first total thickness T1 is greater than the second total thickness T2, the supporting force of the sealant spacer A1 representing the sealant A is too good, and the supported liquid crystal gap MD is larger than the first support portion of the display region R1. The liquid crystal gap MD supported by C1, so that the second support portion C2 which provides a large elastic recovery rate/mechanical property is disposed between the sealant spacer A1 and the first support portion C1, and the second support portion C2 is used as the second support portion C2. The buffer of the liquid crystal gap MD between the display area R1 and the sealant A is buffered, whereby a liquid crystal display panel having a relatively uniform liquid crystal gap MD can be obtained to improve display quality. In the preferred embodiment, the second support portion C2 is disposed in the display region R1 and disposed adjacent to the non-display region R2. However, in a variant embodiment, the second support portion C2 may also be disposed in the non-display area R2 between the display area R1 and the sealant A.

On the other hand, as shown in FIGS. 10 and 14, if the size of the sealant spacer A1 is small, for example, smaller than the height of the first spacer P1, the first total thickness T1 is smaller than the second total thickness T2. That is, when the difference between the first total thickness T1 and the second total thickness T2 is less than zero, step S6 is performed. As shown in FIG. 15, at least one third supporting portion C3 is provided on the sealant A and the first support. The elastic recovery rate/mechanical characteristic between the portions C1 and the third support portion C3 is smaller than the elastic recovery rate/mechanical characteristics of the first support portion C1. Specifically, when the first total thickness T1 is smaller than the second total thickness T2, the supporting force representing the sealant A is insufficient, and the liquid crystal gap MD of the display region R1 supported by the first support portion C1 is larger than the non-display region R2 by the sealant interval. The liquid crystal gap MD supported by the material A1 and the sealant A, so that the third support portion C3 having a small elastic recovery rate/mechanical property is provided between the sealant spacer A1 and the first support portion C1, and the third The support portion C3 serves as a buffer to balance the liquid crystal gap MD between the sealant A and the display region R1, thereby obtaining a liquid crystal display panel having a relatively uniform liquid crystal gap MD, and further improving display quality. As shown in FIG. 15, in the embodiment, the third supporting portion C3 is disposed in the display area R1. In the preferred embodiment, the third supporting portion C3 is disposed adjacent to the non-display area R2, but is not limited thereto. In a variant embodiment, the third support portion C3 may also be disposed in the non-display area R2 and located between the sealant A and the display area R1.

In summary, the present invention provides a support portion having different elastic recovery rates and mechanical properties by changing the underlying material of the support portion, and effectively reduces the variation of the liquid crystal gap by various configurations of the support portion, thereby obtaining uniformity. Since the liquid crystal display panel of the liquid crystal gap has a problem of chromatic aberration due to uneven liquid crystal gap in the conventional liquid crystal display panel. In addition, since the invention only needs to change the configuration of each supporting portion to achieve the effect of improving the chromatic aberration, it is only necessary to adjust the sharing condition of the reticle of the underlying intermediate layer (for example, the color filter layer) without re-creating the spacer. The mask, the mask of the black matrix layer, and the mask of the color filter layer can achieve the effect of adjusting the liquid crystal gap. The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

A‧‧‧Frame glue

A1‧‧‧Frame Glue spacer

B1‧‧‧ first floor

B2‧‧‧ second bottom

B3‧‧‧ third bottom

B4‧‧‧ fourth bottom

BM‧‧‧ black matrix layer

C1‧‧‧First Support

C2‧‧‧Second support

C3‧‧‧ third support

CF‧‧‧ color filter layer

CF1‧‧‧first color filter layer

CF2‧‧‧Second color filter layer

CF3‧‧‧ third color filter layer

G1‧‧‧ first substrate

G2‧‧‧second substrate

M‧‧‧ liquid crystal layer

MD‧‧‧LCD gap

OC ‧‧‧protective layer

P‧‧‧Interstitial

P1‧‧‧ first spacer

P2‧‧‧Second spacer

P3‧‧‧ third spacer

R1‧‧‧ display area

R2‧‧‧ non-display area

S1, S2, S3, S4, S5, S6‧‧ steps

T1‧‧‧first total thickness

T2‧‧‧second total thickness

U‧‧‧Active component layer

10, 10', 20, 20', 30, 30', 30'', 30'' ‧ ‧ ‧ LCD panels

FIG. 1 is a cross-sectional view showing a first embodiment of a liquid crystal display panel of the present invention. FIG. 2 is a partially enlarged schematic view showing the first substrate of the liquid crystal display panel shown in FIG. 1. FIG. 3 is a schematic view showing the configuration of a support portion of the first embodiment of the liquid crystal display panel of the present invention. 4 is a schematic view showing the configuration of a support portion of a second embodiment of the liquid crystal display panel of the present invention. FIG. 5 is a schematic view showing the configuration of a support portion according to a modified embodiment of the second embodiment of the liquid crystal display panel of the present invention. FIG. 6 is a schematic view showing the configuration of a support portion of a third embodiment of the liquid crystal display panel of the present invention. FIG. 7 is a schematic view showing the configuration of a support portion according to a first variation of the third embodiment of the liquid crystal display panel of the present invention. FIG. 8 is a schematic view showing the configuration of a support portion according to a second variation of the third embodiment of the liquid crystal display panel of the present invention. FIG. 9 is a schematic view showing the configuration of a support portion according to a third modified embodiment of the third embodiment of the liquid crystal display panel of the present invention. FIG. 10 is a flow chart showing a method for adjusting a liquid crystal gap of a liquid crystal display panel according to the present invention. 11 to 15 are partial schematic views showing a panel structure of a method for adjusting a liquid crystal gap of a liquid crystal display panel according to the present invention.

S1, S2, S3, S4, S5, S6‧‧ steps

Claims (16)

A liquid crystal display panel, wherein the liquid crystal display panel has a display area and a non-display area surrounding the display area, comprising: a first substrate; a second substrate disposed opposite to the first substrate; a liquid crystal layer Between the first substrate and the second substrate; a sealant disposed between the first substrate and the second substrate in the non-display area, and the sealant surrounds the liquid crystal layer; a first supporting portion is disposed between the first substrate and the second substrate, and each of the first supporting portions respectively includes a first bottom layer and a first spacer disposed on the first substrate a surface, wherein the first bottom layer comprises a black matrix layer, a first color filter layer and a protective layer; a plurality of second support portions are disposed between the first substrate and the second substrate in the display area And each of the second supporting portions respectively includes a second bottom layer and a second spacer disposed on the surface of the first substrate, wherein the second bottom layer comprises the black matrix layer and the protective layer; and a plurality of third Support, setting Between the first substrate and the second substrate in the display area, and each of the third supporting portions respectively includes a third bottom layer and a third spacer disposed on the surface of the first substrate, wherein the third The bottom layer includes the black matrix layer, the first color filter layer, a second color filter layer, and the protective layer; wherein the first bottom layer, the second bottom layer and the third bottom layer have substantially the same total thickness, and The height of the first spacer, the second spacer, and the third spacer are substantially the same. The liquid crystal display panel of claim 1, wherein the second support portions and the third support portions are arranged adjacent to the frame seal and annularly surround the first support portions. The liquid crystal display panel of claim 1, wherein the second support portion is adjacent to the sealant The corners are disposed, and the first support portions are disposed adjacent to the sealant and the second support portions. The liquid crystal display panel of claim 3, wherein the first support portions annularly surround the third support portions, and the first support portions are disposed on the third support portions and the second support portions And between the seals. The liquid crystal display panel of claim 1, wherein the third support portions are disposed adjacent to the corners of the sealant, and the first support portions are disposed adjacent to the sealant and the third support portions. The liquid crystal display panel of claim 5, wherein the first support portions annularly surround the second support portions, and the first support portions are disposed on the second support portions and the third support portions And between the seals. The liquid crystal display panel of claim 1, wherein the elastic recovery rate of the third support portions is less than the elastic recovery rate of the first support portions, and the elastic recovery ratio of the first support portions is less than the second The elastic recovery rate of the support. The liquid crystal display panel of claim 7, wherein the difference between the elastic recovery rate of the third support portions and the elastic recovery rate of the first support portions is 3% or more, and the elasticity of the first support portions The difference between the recovery rate and the elastic recovery rate of the second support portions is 3% or more. The liquid crystal display panel of claim 1, wherein the liquid crystal display panel is a curved liquid crystal display panel, and the curved liquid crystal display panel has a center line, and the curved display panel has the center line as an axis. bending. The liquid crystal display panel of claim 9, wherein the second support portions are disposed along the center line and the two sides of the center line, and the first support portions and the third support portions are arranged at intervals Between the sealant and the second support portion. The liquid crystal display panel of claim 9, wherein the third support portions are disposed along the center line, and the second support portions are disposed along two sides of the center line, the first support portions And disposed between the sealant and the second support portion. The liquid crystal display panel of claim 9, wherein the second support portions are disposed along the center line, and the third support portions are disposed along two sides of the center line, the first support portions And disposed between the sealant and the third support portion. The liquid crystal display panel of claim 9, wherein the second support portions are disposed along the center line, and the first support portions and the third support portions are spaced apart from each other and disposed on the sealant. Between the second support portions. A method for adjusting a liquid crystal gap of a liquid crystal display panel, the method comprising: providing a liquid crystal display panel having a display area and a non-display area surrounding the display area, the liquid crystal display panel comprising: a substrate; a layer is disposed on the surface of the substrate; a frame glue is disposed in the non-display area and disposed on the protective layer; a first color filter layer is disposed between the surface of the substrate and the protective layer; at least one spacer is disposed on the protection layer The surface of the layer is located in the display area, and the at least one spacer and the portion disposed under the protective layer and a portion of the first color filter layer constitute a first support portion; and at least one sealant spacer is disposed on The surface of the protective layer is located in the sealant; the distance from the upper surface of the sealant spacer to the surface of the substrate is measured to obtain a first total thickness; and the distance from the upper surface of the first support portion to the surface of the substrate is measured, Obtaining a second total thickness; and selecting to provide at least one second support portion or providing at least one third support portion according to the difference between the first total thickness and the second total thickness Between the sealant and the first support portion, and the method of providing the at least one second support portion or providing the at least one third support portion includes: providing the first total thickness when the first total thickness is greater than the second total thickness The at least one second support portion is disposed between the sealant and the first support portion, and the elastic recovery rate of the at least one second support portion The elastic recovery rate is greater than the first support portion; and when the first total thickness is less than the second total thickness, the at least one third support portion is disposed between the sealant and the first support portion, and The elastic recovery rate of the at least one third support portion is smaller than the elastic recovery rate of the first support portion. The method for adjusting a liquid crystal gap of a liquid crystal display panel according to claim 14, wherein the at least one second supporting portion comprises the protective layer and a second spacer disposed on the surface of the substrate. The method for adjusting a liquid crystal gap of a liquid crystal display panel according to claim 14, wherein the at least one third supporting portion comprises the protective layer, the first color filter layer, a second color filter layer and a third gap The objects are sequentially disposed on the surface of the substrate.