TWI809908B - Display apparatus - Google Patents

Abstract

A display apparatus including at least one display panel is provided. The display panel includes a first substrate, a second substrate, a liquid crystal layer, a plurality of data lines, a plurality of scan lines, a plurality of pixel structures, a plurality of first bank structures and a plurality of second bank structures. The data lines and the scan lines disposed on the first substrate intersect each other and define a plurality of pixel areas. The pixel structures are respectively disposed in the pixel areas. The first bank structures are disposed on one of the first substrate and the second substrate, and have a plurality of recesses overlapping a plurality of intersections of the data lines and the scan lines. The second bank structures are disposed on the other of the first substrate and the second substrate. The second bank structures respectively penetrate the recesses of the first bank structures, are spaced apart from the first bank structures.

Description

display device

The present invention relates to a display technology, and in particular to a display device.

Generally speaking, liquid crystal display panels adopt different structural designs according to different usage scenarios or display applications. For example, a reflective liquid crystal display panel without a backlight module can display under the illumination of ambient light. In order to increase the reflectivity of ambient light or the absorption efficiency of light of a specific wavelength, the liquid crystal layer of the reflective liquid crystal display panel generally has a relatively large film thickness. However, the high film thickness of the liquid crystal layer will also increase the risk of image signal crosstalk due to the large-angle light deviated from the front view passing through two adjacent pixel areas, resulting in a decrease in image quality.

The present invention provides a display device whose display quality is better due to less light crosstalk between different pixel regions.

The display device of the present invention includes at least one display panel. The display panel includes a first substrate, a second substrate, a liquid crystal layer, a plurality of data lines, a plurality of scanning lines, a plurality of pixel structures, a plurality of first barrier structures and a plurality of second barrier structures. The liquid crystal layer is disposed between the first substrate and the second substrate. A plurality of data lines and a plurality of scanning lines arranged on the first substrate intersect each other and define a plurality of pixel areas. These pixel structures are respectively set in these pixel areas. The first retaining wall structures are disposed on one of the first base plate and the second base plate. The first retaining wall structures have a plurality of grooves, and the grooves are overlapped at intersections of the data lines and the scan lines. These second retaining wall structures are disposed on the other of the first base plate and the second base plate. The second retaining wall structures respectively pass through the grooves of the first retaining wall structures, and are spaced apart from the first retaining wall structures.

Based on the above, in the display device of an embodiment of the present invention, in order to reduce the crosstalk of image signals caused by the large-angle light that deviates from the normal view and passes through two adjacent pixel areas at the same time, each pixel area is surrounded by a A first retaining wall structure extending upward in one direction and a second retaining wall structure extending in the other direction. The first retaining wall structure is provided with a groove at the intersection of the data line and the scanning line, which is suitable for the second retaining wall structure to extend through, and the part of the first retaining wall structure defining the groove is spaced apart from the second retaining wall structure . Accordingly, the fluidity of the liquid crystal layer between different pixel regions can be increased, and the process yield can be improved.

As used herein, "about," "approximately," "essentially," or "essentially" includes the stated value and averages within acceptable deviations from the particular value as determined by one of ordinary skill in the art, taking into account the The measurement in question and the specific amount of error associated with the measurement (ie, the limitations of the measurement system). For example, "about" can mean within one or more standard deviations of the stated value, or for example within ±30%, ±20%, ±15%, ±10%, ±5%. Furthermore, "about", "approximately", "essentially" or "substantially" used herein can choose a more acceptable deviation range or standard deviation according to the nature of measurement, cutting or other properties, and can be Not one standard deviation applies to all properties.

In the drawings, the thickness of layers, films, panels, regions, etc., are exaggerated for clarity. It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element, or Intermediate elements may also be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. As used herein, "connected" may refer to physical and/or electrical connection. Furthermore, "electrically connected" may mean that other elements exist between two elements.

Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and descriptions to refer to the same or like parts.

FIG. 1 is a schematic bottom view of a display device according to a first embodiment of the present invention. 2A and 2B are schematic cross-sectional views of the display device shown in FIG. 1 . FIG. 2A corresponds to the section line A1 - A2 of FIG. 1 , and FIG. 2B corresponds to the section line A3 - A4 of FIG. 1 . For clarity, FIG. 1 omits the illustration of the common electrode layer 150 in FIG. 2A and FIG. 2B .

Referring to FIG. 1 , FIG. 2A and FIG. 2B , the display device 10A includes a display panel 100A. The display panel 100A includes a first substrate 101 , a second substrate 102 , a plurality of data lines DL, a plurality of scan lines GL, a plurality of pixel structures PX and a liquid crystal layer 200 . The liquid crystal layer 200 is disposed between the first substrate 101 and the second substrate 102 . The data lines DL and the scan lines GL are disposed on the first substrate 101 .

In this embodiment, the plurality of data lines DL are arranged along the direction X and extend in the direction Y, and the plurality of scan lines GL are arranged along the direction Y and extend in the direction X. More specifically, the data lines DL intersect the scan lines GL and define a plurality of pixel areas PA. A plurality of pixel structures PX are respectively arranged in the pixel areas PA. The pixel structure PX may include an active device T and a pixel electrode PE, wherein the active device T is electrically connected to the pixel electrode PE, a data line DL and a scan line GL. In this embodiment, the film thickness of the liquid crystal layer 200 in the pixel area PA may be between 3 microns and 25 microns, even between 5 microns and 15 microns.

For example, the respective pixel electrodes PE of these pixel structures PX may have the same or different driving potentials by receiving the voltage signal from the data line DL through the active elements T that are sequentially turned on. In this embodiment, the common electrode layer 150 may be disposed on the second substrate 102, and the common electrode layer 150 has a ground potential or a fixed potential. The electric field generated by the potential difference between the pixel electrode PE and the common electrode layer 150 can drive a plurality of liquid crystal molecules (not shown) in the liquid crystal layer 200 to rotate and form a corresponding alignment state, and different alignment states allow liquid crystals to pass through The polarized light of molecules has different polarization states, which in turn produces different light intensities. Therefore, by individually controlling the potentials of the pixel electrodes PE of these pixel structures PX, the polarized light passing through different pixel areas PA can generate different or the same light intensity, thereby achieving the effect of image display.

The pixel electrode PE and the common electrode layer 150 are, for example, light-transmitting electrodes, and the material of the light-transmitting electrodes can be selected from metal oxides, such as indium tin oxide, indium zinc oxide, aluminum tin oxide, aluminum zinc oxide, etc. Oxide, or other suitable oxides, or a stacked layer of at least two of the above, but not limited thereto. In another embodiment, the pixel electrode PE can also be a reflective electrode, and the material of the reflective electrode can be selected from metals, alloys, oxides or nitrides of metal materials, oxynitrides of metal materials, or other suitable materials. materials, or stacked layers of metal materials and other conductive materials.

In this embodiment, the display panel 100A is, for example, a transmissive liquid crystal display panel. Correspondingly, the display device 10A may also optionally include a backlight module (not shown) as a backlight source of the display panel 100A, but not limited thereto. In other embodiments, the display panel may also be a reflective liquid crystal display panel. That is, the display device may not have a backlight module, but use ambient light as an illumination source to display images.

For example, a plurality of scan lines GL can be formed on the first metal layer, and a plurality of data lines DL can be formed on the second metal layer, wherein the first metal layer is located between the first substrate 101 and the second metal layer. In order to electrically separate the first metal layer and the second metal layer, an insulating layer 110 is provided between the two metal layers, and another insulating layer 120 is covered on the second metal layer. Materials of the insulating layer 110 and the insulating layer 120 can be selected from silicon oxide, silicon nitride or other suitable dielectric materials.

It should be noted that, in order to clearly present the structural features of the present invention, the accompanying drawings omit the drawing of some film layers. For example, the display panel 100A may further include a semiconductor layer, a passivation layer, an interlayer insulating layer, other metal layers, or a combination thereof to form a desired pixel circuit structure. That is to say, the present invention is not limited by the contents disclosed in the drawings, and other unshown film layers may also be provided between the first retaining wall structure 141 and the insulating layer 120 to form required electronic components (such as active element T or storage capacitor).

In order to reduce the crosstalk of image signals caused by the large-angle light deviated from the front view while passing through two adjacent pixel areas PA, the display panel 100A is further provided with a plurality of first barrier structures 141 and a plurality of second barrier structures 142 . In detail, the plurality of first wall structures 141 have a plurality of grooves 141rs, and the grooves 141rs overlap at intersections of the plurality of data lines DL and the plurality of scan lines GL. A plurality of second retaining wall structures 142 respectively penetrate through the grooves 141rs of the first retaining wall structures 141 .

The extending direction of the first wall structures 141 intersects the extending direction of the second wall structures 142 , and substantially forms a wall structure surrounding each pixel electrode PE. For example, in this embodiment, a plurality of first barrier structures 141 can be disposed on the first substrate 101 and overlap a plurality of scanning lines GL, and a plurality of second barrier structures 142 can be disposed on the second on the substrate 102 and overlap with a plurality of data lines DL. It should be noted that the overlapping relationship between the two components here is, for example, the overlapping relationship of the two components along the direction Z. Unless specifically mentioned below, the overlapping relationship between multiple components is defined in this manner, and will not be repeated here.

It should be noted that although the second retaining wall structure 142 runs through the groove 141rs of the first retaining wall structure 141, the part of the second retaining wall structure 142 in the groove 141rs does not touch the first retaining wall structure 141, Instead, it is spaced apart from the first retaining wall structure 141 (as shown in FIG. 2A ). That is, there is a gap at the intersection of the first wall structure 141 and the second wall structure 142 at the intersection of their respective extending directions, and the gap can increase the fluidity of the liquid crystal layer 200 between different pixel areas PA. For example, during the assembly process of the display panel 100A, the extrusion of the liquid crystal material coated between the first substrate 101 and the second substrate 102 in the form of droplets on the first substrate 101 and the second substrate 102 Diffusion will proceed along the surface of the structures on the two substrates. Due to the high height of the barrier structure, the setting of the aforementioned gap can effectively improve the diffusivity of the liquid crystal material at the intersection of the first barrier structure 141 and the second barrier structure 142 , thereby improving the process yield.

The materials of the first retaining wall structure 141 and the second retaining wall structure 142 can be selected from organic insulating materials (such as polyesters, polyolefins, polyacrylics, polycarbonates, polyalkylene oxides, polystyrenes, etc.) , polyethers, polyketones, polyalcohols, polyaldehydes, or other suitable materials, or combinations thereof) or inorganic insulating materials (such as silicon nitride, silicon oxide, silicon carbide, or aluminum oxide), but not This is the limit.

In order to increase light utilization efficiency, the first wall structure 141 and the second wall structure 142 can also be made of materials with high reflectivity (eg, white photoresist material). Preferably, the reflectivity of the first retaining wall structure 141 and the second retaining wall structure 142 may be greater than 20%.

On the other hand, the display panel 100A may further include a plurality of spacers SP. In this embodiment, these spacers SP may be disposed on the first retaining wall structure 141 . More specifically, the first wall structure 141 has a surface 141s facing the second substrate 102, and the spacers SP can protrude from the surface 141s of the first wall structure 141, and abut against the second substrate 102 and the common electrode. on layer 150. For example, the material of the spacer SP and the first wall structure 141 can be optionally the same, and can be formed in the same lithographic etching process, but not limited thereto. In this embodiment, the spacers SP do not overlap with the second retaining wall structure 142 along the normal direction (for example, the direction Z) of the surface 141 s of the first retaining wall structure 141 , but not limited thereto.

It should be noted that the configuration relationship between the spacer SP and the pixel area PA is not a one-to-one relationship, but only one spacer SP is set in a plurality of pixel areas PA adjacent to each other (as shown in Figure 1). . Accordingly, the fluidity of the liquid crystal material between the pixel areas PA can be further increased.

Some other embodiments will be listed below to describe the present disclosure in detail, wherein the same components will be marked with the same symbols, and the description of the same technical content will be omitted.

FIG. 3 is a schematic bottom view of a display device according to a second embodiment of the present invention. 4A and 4B are schematic cross-sectional views of the display device shown in FIG. 3 . FIG. 4A corresponds to the section line B1-B2 in FIG. 3 , and FIG. 4B corresponds to the section line B3-B4 in FIG. 3 . For clarity, FIG. 3 omits the illustration of the common electrode layer 150 in FIG. 4A and FIG. 4B .

Referring to FIG. 3 , FIG. 4A and FIG. 4B , the difference between the display device 10B of this embodiment and the display device 10A of FIG. 1 lies in that the arrangement of the retaining wall structure is different. Specifically, in the display device 10B of this embodiment, the first wall structure 141A of the display panel 100B is disposed on the second substrate 102 and overlaps a plurality of data lines DL. The second wall structure 142A is disposed on the first substrate 101 and overlaps a plurality of scanning lines GL.

On the other hand, different from the display panel 100A shown in FIG. 2A , the display panel 100B of this embodiment has spacers SP″ disposed on the second retaining wall structures 142A. More specifically, the plurality of second retaining wall structures 142A have Facing the surface 142s of the second substrate 102 , a plurality of spacers SP″ protrude from the surface 142s of the second wall structures 142A, and abut against the second substrate 102 and the common electrode layer 150 . For example, the material of the spacer SP" and the second wall structure 142A can be optionally the same, and can be formed in the same lithographic etching process, but not limited thereto. In this embodiment, these spacers The object SP" along the normal direction (such as the direction Z) of the surface 142s of the second retaining wall structure 142A does not overlap with the first retaining wall structure 141A, but not limited thereto.

Since the technical effect produced by the first retaining wall structure 141A, the second retaining wall structure 142A and the spacer SP" in the display panel 100B of this embodiment is similar to that of the display panel 100A in FIG. 2A , please refer to the foregoing embodiments for detailed description. The relevant paragraphs will not be repeated here.

FIG. 5 is a schematic bottom view of a display device according to a third embodiment of the present invention. 6A and 6B are schematic cross-sectional views of the display device shown in FIG. 5 . FIG. 6A corresponds to the section line C1-C2 in FIG. 5 , and FIG. 6B corresponds to the section line C3-C4 in FIG. 5 . For clarity, FIG. 5 omits the illustration of the common electrode layer 150 in FIG. 6A and FIG. 6B .

Please refer to FIG. 5 , FIG. 6A and FIG. 6B , the difference between the display device 10C of this embodiment and the display device 10B of FIG. 3 lies in that the arrangement of the retaining wall structure is different. Specifically, in the display device 10C of this embodiment, the first wall structure 141B of the display panel 100C is disposed on the first substrate 101 and overlaps a plurality of data lines DL. The second barrier structure 142B is disposed on the second substrate 102 and overlaps a plurality of scanning lines GL.

On the other hand, different from the display panel 100A shown in FIG. 2A , the display panel 100C of this embodiment has spacers SP″ disposed on the second retaining wall structures 142B. More specifically, the plurality of second retaining wall structures 142B have Facing the surface 142s of the first substrate 101, a plurality of spacers SP″ protrude from the surface 142s of the second wall structure 142B, and abut against the first substrate 101, the insulating layer 110, the insulating layer 120 and the scanning line GL formed laminated structure. For example, the material of the spacer SP" and the second wall structure 142B can be optionally the same, and can be formed in the same lithographic etching process, but not limited thereto. In this embodiment, these spacers The object SP" along the normal direction (for example, the direction Z) of the surface 142s of the second retaining wall structure 142B does not overlap with the first retaining wall structure 141B, but not limited thereto.

Since the technical effect produced by the first retaining wall structure 141B, the second retaining wall structure 142B and the spacer SP" in the display panel 100C of this embodiment is similar to that of the display panel 100A in FIG. 2A , please refer to the foregoing embodiments for detailed description. The relevant paragraphs will not be repeated here.

FIG. 7 is a schematic bottom view of a display device according to a fourth embodiment of the present invention. 8A and 8B are schematic cross-sectional views of the display device shown in FIG. 7 . FIG. 8A corresponds to the section line D1-D2 in FIG. 7 , and FIG. 8B corresponds to the section line D3-D4 in FIG. 7 . For clarity, FIG. 7 omits the illustration of the common electrode layer 150 in FIG. 8A and FIG. 8B .

Referring to FIG. 7 , FIG. 8A and FIG. 8B , the difference between the display device 10D of this embodiment and the display device 10A of FIG. 1 lies in that the arrangement of the retaining wall structure is different. Specifically, in the display device 10D of this embodiment, the first wall structure 141C of the display panel 100D is disposed on the second substrate 102 and overlaps a plurality of scanning lines GL. The second wall structure 142C is disposed on the first substrate 101 and overlaps a plurality of data lines DL.

On the other hand, the spacer SP of the display panel 100D is disposed on the first wall structure 141C. More specifically, a plurality of first wall structures 141C have a surface 141s facing the first substrate 101 , and a plurality of spacers SP protrude from the surfaces 141s of these first wall structures 141C, and abut against the first substrate 101 , the insulating layer 110 , the insulating layer 120 and the stacked structure formed by the scanning line GL. For example, the material of the spacer SP and the first wall structure 141C can be optionally the same, and can be formed in the same lithographic etching process, but not limited thereto. In this embodiment, the spacers SP do not overlap with the second retaining wall structure 142C along the normal direction (for example, the direction Z) of the surface 141 s of the first retaining wall structure 141C, but not limited thereto.

Since the technical effect produced by the first retaining wall structure 141C, the second retaining wall structure 142C and the spacer SP in the display panel 100D of this embodiment is similar to that of the display panel 100A in FIG. Relevant paragraphs will not be repeated here.

FIG. 9 is a schematic bottom view of a display device according to a fifth embodiment of the present invention. 10A and 10B are schematic cross-sectional views of the display device shown in FIG. 9 . FIG. 10A corresponds to section line E1 - E2 in FIG. 9 , and FIG. 10B corresponds to section line E3 - E4 in FIG. 9 . For clarity, FIG. 9 omits the illustration of the common electrode layer 150 in FIG. 10A and FIG. 10B .

Referring to FIG. 9 , FIG. 10A and FIG. 10B , the difference between the display device 20A of this embodiment and the display device 10A of FIG. 1 lies in that the configuration of the first retaining wall structure and the arrangement of the spacers are different. Specifically, in the display device 20A of this embodiment, the first retaining wall structure 141D of the display panel 100E further has a plurality of groove bottoms 141bp defining a plurality of grooves 141rs-A, and these groove bottoms 141bp are respectively overlapping with multiple intersections of multiple data lines DL and multiple scan lines GL.

That is to say, different from the first wall structure 141 in the embodiment in FIG. 1 , the first wall structure 141D in this embodiment is not broken at the intersection of the scanning line GL and the data line DL, but instead passes through these grooves. The bottom 141bp connections are continuously extended and distributed on the scan line GL.

On the other hand, the spacer SP"-A of the display panel 100E is disposed on the second wall structure 142D. More specifically, the plurality of second wall structures 142D have a surface 142s facing the first substrate 101, and the plurality of The spacer SP"-A protrudes from the surface 142s of these second barrier wall structures 142D, and abuts against the grooves of the first substrate 101, the insulating layer 110, the insulating layer 120, the scanning line GL, and the first barrier wall structure 141D. On the stacked structure formed by the bottom 141bp. That is, in this embodiment, the spacers SP″-A overlap the groove bottom 141bp of the first wall structure 141D along the normal direction (eg, direction Z) of the surface 142s of the second wall structure 142D. For example, the material of the spacer SP″-A and the second wall structure 142D can be optionally the same, and can be formed in the same lithographic etching process, but not limited thereto.

In particular, when the overall height of the spacer SP″-A and the second wall structure 142D is not enough to separate the required space between the first substrate 101 and the second substrate 102, the liquid crystal layer 200 transmits The groove bottom 141bp is formed in the first retaining wall structure 141D on the first substrate 101 on one side, and the spacer SP″-A abuts against the groove bottom 141bp, so as to solve the above-mentioned insufficient height problem. From another point of view, through the cooperation of the groove bottom 141bp of the first wall structure 141D and the spacer SP"-A on the second wall structure 142D, the wall structure and the spacer SP"-A can be increased. The material of A is selected with flexibility and process margin.

Since the technical effect produced by the first retaining wall structure 141D, the second retaining wall structure 142D and the spacer SP"-A in the display panel 100E of this embodiment is similar to that of the display panel 100A in FIG. 2A , please refer to the foregoing for detailed description. Relevant paragraphs of the embodiment will not be repeated here.

FIG. 11 is a schematic bottom view of a display device according to a sixth embodiment of the present invention. 12A and 12B are schematic cross-sectional views of the display device shown in FIG. 11 . FIG. 12A corresponds to the section line F1-F2 in FIG. 11 , and FIG. 12B corresponds to the section line F3-F4 in FIG. 11 . For clarity, FIG. 11 omits the illustration of the common electrode layer 150 in FIG. 12A and FIG. 12B .

Referring to FIG. 11 , FIG. 12A and FIG. 12B , the difference between the display device 20B of this embodiment and the display device 20A of FIG. 9 lies in that the arrangement of the retaining wall structure is different. Specifically, in the display device 20B of this embodiment, the first wall structure 141E of the display panel 100F is arranged on the second substrate 102 and is arranged to overlap a plurality of data lines DL, and the second wall structure 142E is It is arranged on the first substrate 101 and overlapped with a plurality of scanning lines GL.

Correspondingly, the plurality of second wall structures 142E have surfaces 142s facing the second substrate 102, and the plurality of spacers SP"-A protrude from the surfaces 142s of the second wall structures 142E, and abut against the second wall structures 142E. The substrate 102, the common electrode layer 150 and the groove bottom 141bp of the first wall structure 141E form a stacked structure. That is, in this embodiment, these spacers SP"-A are along the second wall structure The normal direction (for example, the direction Z) of the surface 142s of the 142E overlaps with the groove bottom 141bp of the first retaining wall structure 141E.

Since the relative arrangement relationship of the first retaining wall structure 141E, the second retaining wall structure 142E, and the spacer SP"-A and the technical effects thereof in this embodiment are similar to those of the display panel 100E shown in Fig. 10A and Fig. 10B , detailed For description, please refer to the relevant paragraphs of the foregoing embodiments, and details will not be repeated here.

FIG. 13 is a schematic bottom view of a display device according to a seventh embodiment of the present invention. 14A and 14B are schematic cross-sectional views of the display device shown in FIG. 13 . FIG. 14A corresponds to the section line G1-G2 in FIG. 13 , and FIG. 14B corresponds to the section line G3-G4 in FIG. 13 . For the sake of clarity, FIG. 13 omits the drawing of some film layers in FIG. 14A and FIG. 14B .

Please refer to FIG. 13 , FIG. 14A and FIG. 14B , different from the display device in any of the foregoing embodiments, the display device 30 of this embodiment is formed by stacking a plurality of display panels. For example, the display device 30 may be formed by stacking two display panels (for example, a first display panel 100A1 and a second display panel 100A2 ). In detail, the first display panel 100A1 is disposed on one side of the second substrate 102 of the second display panel 100A2, and the second display panel 100A2 is disposed on one side of the first substrate 101 of the first display panel 100A1. The display device 30 may further include an adhesive layer 300 for connecting the first display panel 100A1 and the second display panel 100A2 . The material of the adhesive layer 300 can be selected from optical clear resin (OCR), optical clear adhesive (OCA), pressure sensitive adhesive (PSA), or other suitable adhesive materials.

The configurations of the retaining wall structure and the spacer SP of the two display panels are similar to those of the display panel 100A shown in FIG. 2A and FIG. 2B , so details will not be repeated here. In particular, the two display panels of the display device 30 can be replaced by the display panels of any of the above-mentioned embodiments, and the configurations of the retaining wall structures and spacers of the two display panels can also be different, and the present invention does not be restricted.

In this embodiment, the display device 30 is, for example, a reflective display device. Therefore, the reflective layer 160 can be disposed on the first substrate 101 of the second display panel 100A2 , and the reflective layer 160 can increase the overall reflectivity and light uniformity of the display device 30 . For example, the surface of the reflective layer 160 facing the first display panel 100A1 may be provided with a plurality of optical microstructures, and these optical microstructures are suitable for reflecting incident light in a more uniform manner. In other words, the distribution of the emitted light type of the reflected light is relatively uniform.

On the other hand, the display device 30 may further include a light-shielding pattern layer 180 . For example, the light-shielding pattern layer 180 can be disposed on the second substrate 102 of the first display panel 100A1 and overlap the multiple data lines DL and the multiple scan lines GL. The light-shielding pattern layer 180 has a plurality of openings 180OP overlapping the plurality of pixel areas PA, and the reflective layer 160 is disposed overlapping the openings 180OP. However, the present invention is not limited thereto. In other embodiments, each display panel in the display device can also be provided with a light-shielding pattern layer in a manner similar to that of the first display panel 100A1 of this embodiment.

Further, in this embodiment, the liquid crystal layer 200A and the liquid crystal layer 200B of the two display panels are formed of, for example, a liquid crystal material added with a dichroic dye (dichroic dye) and a chiral dopant, wherein the liquid crystal layer 200A The absorption wavelength range of the added dichroic dye is different from the absorption wavelength range of the added dichroic dye in the liquid crystal layer 200B. For example, after the ambient light EB entering the display device 30 from one side of the second substrate 102 of the first display panel 100A1 passes through the liquid crystal layer 200A of the first display panel 100A1, part of the light energy will be absorbed by the liquid crystal layer 200A. The added dichroic dye absorbs to form light having a first color. Then, after passing through the liquid crystal layer 200B of the second display panel 100A2 , another part of the light energy will be absorbed by the dichroic dye added in the liquid crystal layer 200B to form light with a second color. That is, the liquid crystal layer 200A is suitable for passing light having the first color or the second color, and the liquid crystal layer 200B is suitable for passing light having the second color.

The light with the second color is reflected by the reflective layer 160 to form sub-rays EBa and sub-rays EBb. Among them, the sub-ray EBa passes through the liquid crystal layer 200A and the second display panel 100A2 again and exits the display device 30, while the other sub-ray EBb is transmitted to the second barrier structure of the second display panel 100A2 at a relatively large angle. 142 , and is at least partially reflected by the second retaining wall structure 142 . That is to say, the arrangement of the retaining wall structure in the stacked structure of multiple display panels can further suppress the large-angle light that deviates from the front view while passing through the non-overlapping two pixel areas PA along the direction Z on different display panels to generate images. signal crosstalk. From another point of view, it can also increase the utilization rate of light energy of light.

It should be noted that, in another unillustrated embodiment, the number of display panels of the display device may also be three or more, and the structural design of each display panel may be the same as that of the display panel in any of the foregoing embodiments. accomplish. Since the first display panel 100A1 and the second display panel 100A2 in this embodiment have the configuration relationship between the first retaining wall structure 141 and the second retaining wall structure 142 and the resulting technical effects are similar to the display panel 100A in FIG. 2A , details For description, please refer to the relevant paragraphs of the foregoing embodiments, and details will not be repeated here.

To sum up, in the display device according to an embodiment of the present invention, in order to reduce the crosstalk of image signals caused by the large-angle light deviated from the normal view through two adjacent pixel areas at the same time, each pixel area is surrounded by a There is a first wall structure extending in one direction and a second wall structure extending in the other direction. The first retaining wall structure is provided with a groove at the intersection of the data line and the scanning line, which is suitable for the second retaining wall structure to extend through, and the part of the first retaining wall structure defining the groove is spaced apart from the second retaining wall structure . Accordingly, the fluidity of the liquid crystal layer between different pixel regions can be increased, and the process yield can be improved.

10A, 10B, 10C, 10D, 20A, 20B, 30: display device 100A, 100B, 100C, 100D, 100E, 100F, 100A1, 100A2: display panel 101: The first substrate 102: Second substrate 110, 120: insulating layer 141, 141A, 141B, 141C, 141D, 141E: first retaining wall structure 141bp: the bottom of the groove 141rs, 141rs-A: Groove 141s, 142s: surface 142, 142A, 142B, 142C, 142D, 142E: second retaining wall structure 150: common electrode layer 160: reflective layer 180: shading pattern layer 180OP: opening 200, 200A, 200B: liquid crystal layer DL: data line EB: ambient light EBa, EBb: sub-rays GL: scan line PA: pixel area PE: pixel electrode PX: pixel structure SP, SP", SP"-A: spacer T: active component X, Y, Z: direction A1-A2, A3-A4, B1-B2, B3-B4, C1-C2, C3-C4, D1-D2, D3-D4, E1-E2, E3-E4, F1-F2, F3-F4, G1- G2, G3-G4: section line

FIG. 1 is a schematic bottom view of a display device according to a first embodiment of the present invention. 2A and 2B are schematic cross-sectional views of the display device shown in FIG. 1 . FIG. 3 is a schematic bottom view of a display device according to a second embodiment of the present invention. 4A and 4B are schematic cross-sectional views of the display device shown in FIG. 3 . FIG. 5 is a schematic bottom view of a display device according to a third embodiment of the present invention. 6A and 6B are schematic cross-sectional views of the display device shown in FIG. 5 . FIG. 7 is a schematic bottom view of a display device according to a fourth embodiment of the present invention. 8A and 8B are schematic cross-sectional views of the display device shown in FIG. 7 . FIG. 9 is a schematic bottom view of a display device according to a fifth embodiment of the present invention. 10A and 10B are schematic cross-sectional views of the display device shown in FIG. 9 . FIG. 11 is a schematic bottom view of a display device according to a sixth embodiment of the present invention. 12A and 12B are schematic cross-sectional views of the display device shown in FIG. 11 . FIG. 13 is a schematic bottom view of a display device according to a seventh embodiment of the present invention. 14A and 14B are schematic cross-sectional views of the display device shown in FIG. 13 .

10A: Display device

100A: display panel

101: The first substrate

102: Second substrate

110, 120: insulating layer

141: The first retaining wall structure

141rs: groove

141s: surface

142: Second retaining wall structure

150: common electrode layer

200: liquid crystal layer

DL: data line

GL: scan line

SP: spacer

X, Y, Z: direction

A1-A2: Sectional line

Claims (13)

A display device comprising: At least one display panel, including: a first substrate and a second substrate; a liquid crystal layer disposed between the first substrate and the second substrate; A plurality of data lines and a plurality of scanning lines are arranged on the first substrate, and the data lines intersect the scanning lines to define a plurality of pixel areas; A plurality of pixel structures are respectively set in the pixel areas; A plurality of first barrier structures are disposed on one of the first substrate and the second substrate, the first barrier structures have a plurality of grooves, and the grooves overlap the data lines and the scanning Multiple intersections of lines; and A plurality of second retaining wall structures are arranged on the other of the first base plate and the second base plate, and the second retaining wall structures respectively pass through the grooves of the first retaining wall structures, and are connected to the The first retaining wall structure is spaced apart. The display device according to claim 1, wherein the first wall structures are disposed on the first substrate and overlap the scan lines, the second wall structures are disposed on the second substrate, and Overlap the data line settings. The display device according to claim 1, wherein the first wall structures are arranged on the second substrate and overlap the data lines, the second wall structures are arranged on the first substrate, and Overlap the scanline settings. The display device according to claim 1, wherein the first wall structures are arranged on the first substrate and overlap the data lines, the second wall structures are arranged on the second substrate, and Overlap the scanline settings. The display device according to claim 1, wherein the first wall structures are disposed on the second substrate and overlap the scan lines, the second wall structures are disposed on the first substrate, and Overlap the data line settings. The display device according to claim 1, wherein the at least one display panel further comprises: A plurality of spacers are disposed on the first wall structures, wherein the first wall structures are disposed on one of the first substrate and the second substrate, and have a direction toward the first substrate and the second substrate. A surface of the other of the second substrates, the spacers protrude from the surface of the first wall structures, and lean against the other of the first substrate and the second substrate. The display device according to claim 6, wherein the spacers do not overlap the second wall structures along the normal direction of the surface of the first wall structures. The display device according to claim 1, wherein the at least one display panel further comprises: A plurality of spacers are disposed on the second wall structures, wherein the second wall structures are disposed on one of the first substrate and the second substrate, and have a direction toward the first substrate and the second substrate. A surface of the other of the second substrates, the spacers protrude from the surface of the second retaining wall structures, and lean against the other of the first substrate and the second substrate. The display device according to claim 8, wherein the spacers do not overlap the first wall structures along the normal direction of the surface of the second wall structures. The display device according to claim 8, wherein the spacers are located in at least part of the grooves of the first wall structures, and the first wall structures also have a plurality of grooves defining the grooves The groove bottoms, the spacers overlap the groove bottoms of the first wall structures along the normal direction of the surface of the second wall structures. The display device according to claim 1, wherein the reflectivity of the first wall structures and the second wall structures is greater than 20%. The display device according to claim 1, wherein the at least one display panel includes a first display panel and a second display panel overlapped, and the first display panel is arranged on the second substrate of the second display panel On one side, the second display panel is arranged on one side of the first substrate of the first display panel, the liquid crystal layer of the first display panel is suitable for allowing light with a first color to pass through, and the second display panel The liquid crystal layer is suitable for passing light having a second color, and the liquid crystal layer of the first display panel is also suitable for passing light having the second color reflected by the second display panel. The display device according to claim 12, wherein a reflective layer is provided on the first substrate of the second display panel, a light-shielding pattern layer is provided on the second substrate of the first display panel, and the light-shielding pattern layer overlaps The scan lines and the data lines have a plurality of openings overlapping the pixel regions, and the reflective layer overlaps the openings.