WO2020036041A1

WO2020036041A1 - Display device

Info

Publication number: WO2020036041A1
Application number: PCT/JP2019/028549
Authority: WO
Inventors: 広美西川
Original assignee: 株式会社ジャパンディスプレイ
Priority date: 2018-08-14
Filing date: 2019-07-19
Publication date: 2020-02-20
Also published as: JP2020027203A

Abstract

The present invention provides a display device that can be assembled with high accuracy. This display device is provided with a lighting unit having a main body and a first protrusion, and a display panel equipped with a display cell and a first optical film. A first peripheral region of the display cell includes a first region, and a bent second region. The first optical film includes a central portion and a first peripheral portion. The display panel has a first groove portion and a first recessed portion. The first recessed portion is located in a region where the first peripheral region is present, and is open toward the first protrusion, and the first protrusion is fitted thereinto, and the first recessed portion, together with the first protrusion, determines the relative position of the display panel with respect to the lighting unit.

Description

Display device

The embodiment of the present invention relates to a display device.

Generally, a liquid crystal display device or the like is known as a display device. For example, a liquid crystal display device
It has a liquid crystal display panel and a lighting device. The liquid crystal display panel has a display area and a non-display area surrounding the display area. By the way, when assembling a liquid crystal display device into a module, it is required to assemble with high precision.

JP-A-9-43579 JP 2009-300609 A

This embodiment provides a display device that can be assembled with high accuracy.

The display device according to one embodiment includes:
A plate-shaped main body that emits light including an upper surface, a first side surface, and a first corner portion linearly extending between the upper surface and the first side surface; A lighting device having a first protrusion that protrudes;
A display cell for displaying an image including a central region facing the upper surface and a first peripheral region extending from the central region, and a first cell fixed to the display cell and located between the display cell and the lighting device. An optical film, and a display panel comprising:
The first peripheral region includes a first region facing the first side surface, and a second region that is located and bent between the first region and the central region,
The first optical film includes a central portion that contacts the upper surface, and a first peripheral portion that is located at an interval from the central portion and contacts the first side surface,
The display panel includes:
A first portion formed between the central portion and the first peripheral portion, facing the first corner portion, extending along the first corner portion, and recessed from the first corner portion toward the second region. 1 groove,
A first position which is located in a region where the first peripheral region is present and which opens toward the first protrusion and is fitted with the first protrusion to determine a relative position of the display panel with respect to the lighting device together with the first protrusion; And a recess.

FIG. 1 is a perspective view showing a display device according to one embodiment. FIG. 2 is another perspective view showing the display device. FIG. 3 is a perspective view showing a lighting device of the display device. FIG. 4 is a plan view showing a display panel, a driving IC, and a wiring board of the display device in a developed manner. FIG. 5 is a circuit diagram showing a display cell and a driving IC of the display panel, and also shows a circuit configuration of one pixel. FIG. 6 is a cross-sectional view showing the display panel along a line VI-VI in FIG. FIG. 7 is a sectional view showing a part of the display panel. FIG. 8 is a cross-sectional view of the display device taken along line VIII-VIII in FIG. FIG. 9 is a cross-sectional view showing the display device along line IX-IX in FIG. FIG. 10 is a cross-sectional view for explaining a method of assembling the display device, and is a diagram illustrating a state before the display panel is bent. FIG. 11 is a cross-sectional view following FIG. 10 for explaining a method of assembling the display device, and is a diagram illustrating a state where the display panel is bent once. FIG. 12 is a cross-sectional view illustrating a display device according to Modification Example 1 of the embodiment. FIG. 13 is a cross-sectional view illustrating a display device according to Modification 2 of the embodiment. FIG. 14 is a cross-sectional view illustrating a display device according to Comparative Example 1. FIG. 15 is a cross-sectional view illustrating a display device according to Comparative Example 2.

Hereinafter, embodiments, modified examples, and comparative examples of the present invention will be described with reference to the drawings. It should be noted that the disclosure is merely an example, and those skilled in the art can easily conceive of appropriate changes while maintaining the gist of the invention, which are naturally included in the scope of the present invention. In addition, in order to make the description clearer, the width, thickness, shape, and the like of each part may be schematically illustrated in comparison with an actual embodiment, but this is merely an example, and the interpretation of the present invention is not limited thereto. It is not limited. In the specification and the drawings, components similar to those described in regard to a drawing thereinabove are marked with like reference numerals, and a detailed description is omitted as appropriate.

(One embodiment)
First, a display device according to an embodiment will be described. FIG. 1 is a perspective view showing a display device DSP according to one embodiment. FIG. 2 is another perspective view showing the display device DSP. FIG. 3 is a perspective view showing the illumination device IL of the display device DSP.

As shown in FIGS. 1 to 3, the first direction X, the second direction Y, and the third direction Z are orthogonal to each other, but may intersect at an angle other than 90 degrees. The first direction X and the second direction Y correspond to directions parallel to the main surface of the substrate constituting the display device DSP, and the third direction Z corresponds to the thickness direction of the display device DSP. In the following description, the direction toward the tip of the arrow indicating the third direction Z is referred to as “up”, and the direction from the tip of the arrow to the opposite direction is referred to as “down”. In the case of “the second member above the first member” and “the second member below the first member”, the second member may be in contact with the first member or may be located away from the first member. It may be. Viewing the XY plane defined by the first direction X and the second direction Y from the tip side of the arrow indicating the third direction Z is referred to as plan view.

The display device DSP includes a lighting device IL, a display panel PNL, and a driving IC as a first driver.
DD, a wiring board F1 and the like. The display panel PNL includes a display area DA and a non-display area NDA other than the display area DA. The lighting device IL has a plate-shaped main body M. The main body M is configured to emit light to at least the display area DA of the display panel PNL. The main body M includes an upper surface MU, a first side surface MS1, and a first corner C1a extending linearly between the upper surface MU and the first side surface MS1.

In the present embodiment, the main body M includes a lower surface MB opposite to the upper surface MU, a second side surface MS2 provided continuously from the first side surface MS1, and a third side surface MS3 opposite to the first side surface MS1. And a fourth side surface MS4 opposite to the second side surface MS2. The first side surface MS1, the second side surface MS2, the third side surface MS3, and the fourth side surface MS4 have a rectangular shape. The upper surface MU and the lower surface MB have, for example, a rectangular shape as a square. Each of the upper surface MU and the lower surface MB has a pair of long sides extending in the first direction X and a pair of short sides extending in the second direction Y.

Furthermore, the main body M has a first corner C1b extending linearly between the upper surface MU and the second side surface MS2, and a first corner linearly extending between the upper surface MU and the third side surface MS3. Part C1c, a first corner C1d linearly extending between the upper surface MU and the fourth side surface MS4, and a second corner C2a linearly extending between the first side surface MS1 and the lower surface MB. A second corner portion C2b extending linearly between the second side surface MS2 and the lower surface MB, a second corner portion C2c extending linearly between the third side surface MS3 and the lower surface MB, A second corner C2d extending linearly between the fourth side surface MS4 and the lower surface MB. The first corners C1a, C1c and the second corners C2a, C2c extend in the first direction X, and the first corners C1b, C1d and the second corners C2b, C2d extend in the second direction Y. I have.

The main body M includes a light guide LG and a light source unit LU that emits light toward the light guide LG. In this example, the light source unit LU has a fourth side surface MS4. The light guide LG includes a light guide plate located at least in the display area DA. For example, the light guide LG includes a light guide plate, a frame portion having a first side surface MS1, a second side surface MS2, and a third side surface MS3, and a light reflection plate having a lower surface MB. In this case, the frame portion and the light reflection plate surround the light guide plate together with the light source unit LU. The surface of the frame portion on the light guide plate side may have light reflectivity similarly to the light reflection plate.

However, the configuration of the main body M is not limited to the configuration described above, and can be variously modified. For example, the main body M may be formed without the frame portion and the light reflection plate. Further, the light guide plate may have a first side surface MS1, a second side surface MS2, a third side surface MS3, a lower surface MB, and the like.

The illumination device IL further includes not only the main body M but also at least one projection P fixed to the main body M and protruding from a side surface of the main body M. The illumination device IL has at least one first protrusion P1 protruding from the first side surface MS1 and at least one second protrusion P2 protruding from the second side surface MS2. In the present embodiment, the illumination device IL includes two first protrusions P1a and P1b as a plurality of first protrusions protruding from the first side surface MS1, and two second protrusions as a plurality of second protrusions protruding from the second side surface MS2. Projections P2a and P2b. The first protrusion P1b is located at an interval from the first protrusion P1a in the direction in which the first corner portion C1a extends. The second protrusion P2b is located at an interval from the second protrusion P2a in the direction in which the first corner portion C1b extends.

(4) The display area DA of the display panel PNL faces the upper surface MU of the lighting device IL. The non-display area NDA of the display panel PNL is bent along the lighting device IL, and faces the upper surface MU, the first side surface MS1, the second side surface MS2, the third side surface MS3, the fourth side surface MS4, and the lower surface MB. . The drive IC #DD and the wiring board F1 face the lower surface MB. On the side facing the lower surface MB, the drive IC #DD is mounted on the non-display area NDA of the display panel PNL, and the wiring board F1 is connected to the non-display area NDA of the display panel PNL.

The non-display area NDA of the display panel PNL has four extensions NDA1, NDA2, NDA3, and NDA4 which extend independently of each other. Each extension portion NDA1, NDA2, NDA3, NDA4 faces one corresponding side surface MS of the main body M and the lower surface MB. However, the extension amount (length) of each of the extension portions NDA2, NDA3, and NDA4 may be shorter than the example shown in FIG. In this case, each of the extending portions NDA2, NDA3, and NDA4 only needs to face one corresponding side surface MS of the main body M, and does not have to face the lower surface MB.

突起 The projection P of the illumination device IL and a later-described concave portion CO of the display panel PNL form a fitting portion FI. In the present embodiment, the display device DSP has two first fitting portions FI1 and two second fitting portions FI2. With the first fitting portion FI1 and the second fitting portion FI2, the relative position of the display panel PNL with respect to the lighting device IL can be determined.

FIG. 4 is an exploded plan view showing the display panel PNL, the driving IC DD, and the wiring board F1 of the display device DSP.
As shown in FIG. 4, the display panel PNL has a display cell CL for displaying an image. The display cell CL has a first substrate SUB1 and a second substrate SUB2. Drive IC
The DD is mounted on the first substrate SUB1, and the wiring substrate F1 is connected to the first substrate SUB1. The second substrate SUB2 is overlaid on the first substrate SUB1 except for a region for the driving IC DD and the wiring substrate F1. In the present embodiment, the display cell CL has an octagonal shape in plan view.

The display cell CL includes a central area AC facing the upper surface MU of the illumination device IL, and a first peripheral area AP1, a second peripheral area AP2, a third peripheral area AP3, and a fourth peripheral area extending from the central area AC, respectively. And an area AP4. The drive IC $ DD is located in the first peripheral area AP1, and the wiring board F1 is physically fixed to the first peripheral area AP1.

The display panel PNL has a first groove V1a and a second groove V2a. In the drawing, the first groove V1a and the second groove V2a are hatched. The first groove V1a is located between the display area DA and the second groove V2a. The first groove portion V1a and the second groove portion V2a are provided in the extending portions NDA1, NDA2, NDA3, and NDA4, respectively. The first groove portion V1a and the second groove portion V2a are not provided continuously, but are interrupted between adjacent extending portions.

In the extension NDA1, the first groove V1a extends along the first corner C1a (in the first direction X), and the second groove V2a extends along the second corner C2a (in the first direction X). To). In the extension part NDA2, the first groove V1a extends along the first corner C1b (in the second direction Y), and the second groove V2a extends along the second corner C2b (in the second direction Y). To). In the extension portion NDA3, the first groove V1a extends along the first corner C1c (in the first direction X), and the second groove V2a extends along the second corner C2c (in the first direction X). To). In the extension NDA4, the first groove V1a extends along the first corner C1d (in the second direction Y), and the second groove V2a extends along the second corner C2d (in the second direction Y). To).

The display panel PNL has at least one concave portion CO corresponding to the projection P of the lighting device IL. In the present embodiment, the display panel PNL includes a first concave portion CO1a corresponding to the first protrusion P1a, a first concave portion CO1b corresponding to the first protrusion P1b, a second concave portion CO2a corresponding to the second protrusion P2a, and And a second concave portion CO2b corresponding to the two protrusions P2b. For example, the first concave portions CO1a and CO1b are located on both sides of the drive IC #DD in the extending direction of the first corner portion C1a in the extension portion NDA1. In the present embodiment, the first concave portion CO1a is located on the right side of the drive IC $ DD, and the first concave portion CO1b is located on the left side of the drive IC #DD.

FIG. 5 is a circuit diagram showing the display cell CL and the driving IC DD, and also shows a circuit configuration of one pixel PX. Here, an example of a circuit diagram is shown, and the invention is not limited to the circuit diagram shown in FIG.
As shown in FIG. 5, the display cell CL has a plurality of pixels PX, a plurality of scanning lines G (G1 to Gn), and a plurality of signal lines S (S1 to Sm) in the display area DA. And an electrode CE. The plurality of pixels PX are arranged in a matrix. In the display area DA, each of the scanning lines G extends in the first direction X, and each of the signal lines S extends in the second direction Y. In the non-display area NDA, the display cell CL has a scanning line driving circuit GD as a second driver and a signal line driving circuit SD as a third driver. Each of the scanning lines G extends to the non-display area NDA and is connected to the scanning line driving circuit GD. Each of the signal lines S extends to the non-display area NDA and is connected to the signal line driving circuit SD. The common electrode CE is shared by a plurality of pixels PX.

The scanning line driving circuit GD is electrically connected to the driving IC #DD via the wiring WL1. The signal line drive circuit SD is electrically connected to the drive IC #DD via the wiring WL2. The drive IC #DD is electrically connected to a pad group (OLB pad group) PG of outer lead bonding (Outer Lead Bonding) of the display cell CL via the wiring WL3. Note that the wiring board F1 is electrically connected to the OLB pad group PG. The common electrode CE is connected to a common electrode drive circuit in the drive IC #DD via the wiring WL4.

The first concave portions CO1a and CO1b are located on both sides of the drive IC DD in the direction in which the first corner C1a extends (first direction X) in the region where the first peripheral region AP1 exists in the display panel PNL. are doing. In the present embodiment, the first concave portions CO1a and CO1b are located on both sides of the signal line driving circuit SD in the first direction X in the region where the first peripheral region AP1 exists in the display panel PNL.
The scanning line drive circuit GD is located in the second peripheral area AP2. The second concave portions CO2a and CO2b are provided on both sides of the scanning line driving circuit GD in the direction in which the first corner portion C1b extends (the second direction Y) in the region where the second peripheral region AP2 exists in the display panel PNL. positioned.
Thereby, the concave portion CO can be provided in a region where no circuit exists and the wirings are not dense.

Note that, unlike the present embodiment, the common electrode drive circuit may be located in the non-display area NDA independently of the drive IC $ DD, and may be electrically connected to the drive IC $ DD via a wiring. Alternatively, the signal line driving circuit SD may be incorporated in the driving IC $ DD without being independent from the driving IC $ DD.

{Each pixel PX includes a switching element SW, a pixel electrode PE, a common electrode CE, a liquid crystal layer LC, and the like. The switching element SW is composed of, for example, a thin film transistor (TFT), and is electrically connected to the scanning line G and the signal line S. The pixel electrode PE is electrically connected to the switching element SW. The pixel electrode PE of each pixel PX faces the common electrode CE. The liquid crystal layer LC is driven by an electric field generated between the pixel electrode PE and the common electrode CE. The storage capacitor CS is coupled to the pixel electrode PE. The storage capacitor CS is formed, for example, between an electrode having the same potential as the common electrode CE and an electrode having the same potential as the pixel electrode PE. From the above, the display cell CL of the present embodiment is a liquid crystal display cell, the display panel PNL is a liquid crystal display panel, and the display device DSP is a liquid crystal display device.

Here, the description of the detailed configuration of the pixel PX is omitted, but the pixel PX is provided in a display mode using a vertical electric field along a normal line of the main surface of the first substrate SUB1. In contrast, a display mode using an oblique electric field inclined in an oblique direction, a display mode using a horizontal electric field along the main surface of the first substrate SUB1, and a combination of the vertical electric field, the horizontal electric field, and the oblique electric field are appropriately combined. Any of the display modes to be used is applicable. Here, the main surface of the first substrate SUB1 is a surface parallel to the XY plane defined by the first direction X and the second direction Y.

FIG. 6 is a sectional view showing the display panel PNL along the line VI-VI in FIG.
As shown in FIG. 6, the display cell CL includes a first substrate SUB1, a second substrate SUB2 opposed to the first substrate SUB1 with a predetermined gap, a first substrate SUB1, and a second substrate SUB2. A sealing material SL provided between the non-display area NDA and surrounding the display area DA and joining the first substrate SUB1 and the second substrate SUB2, and surrounded by the first substrate SUB1, the second substrate SUB2, and the sealing material SL. And a liquid crystal layer LC formed in a separated space. The second substrate SUB2 has a light shielding layer LS in the non-display area NDA.

The display panel PNL includes, in addition to the display cell CL, a first optical film OF1, a second optical film OF2, an adhesive layer AD1 interposed between the display cell CL and the first optical film OF1, and a display cell CL. And an adhesive layer AD2 interposed between the second optical film OF2.

The first optical film OF1 includes the first polarizing plate PL1, and is bonded to the first substrate SUB1 by the bonding layer AD1. The second optical film OF2 includes the second polarizing plate PL2, and is bonded to the second substrate SUB2 by the bonding layer AD2. The first optical film OF1 and the second optical film OF2 are arranged not only in the display area DA but also in the non-display area NDA. Unlike the present embodiment, the first optical film OF1 and the second optical film OF2 may include not only the polarizing plate PL but also other optical functional layers such as a retardation plate.

The first optical film OF1 has a central portion H opposed to the entire display area DA of the display cell CL, and first to fourth optical elements located at intervals in the central portion H opposed to the non-display area NDA of the display cell CL. And a peripheral portion I. FIG. 6 shows a second peripheral part I2 and a fourth peripheral part I4 among the first to fourth peripheral parts I.

The second peripheral portion I2 has a first portion I2a located at an interval in the central portion H and a second portion I2b located at an interval in the first portion I2a. The first portion I2a is located between the central portion H and the second portion I2b. The fourth peripheral portion I4 has a first portion I4a located at an interval in the central portion H and a second portion I4b located at an interval in the first portion I4a. The first portion I4a is located between the central portion H and the second portion I4b.

On the second peripheral portion I2 side, the first groove portion V1a is formed between the central portion H and the first portion I2a (second peripheral portion I2), and the second groove portion V2a is formed between the first portion I2a and the second portion I2b. Is formed between. On the fourth peripheral portion I4 side, the first groove portion V1a is formed between the central portion H and the first portion I4a (fourth peripheral portion I4), and the second groove portion V2a is formed between the first portion I4a and the second portion I4b. Is formed between.
On the other hand, the second optical film OF2 of the present embodiment faces the display area DA and the non-display area NDA of the display cell CL and is formed continuously. No groove is formed in the second optical film OF2.

FIG. 7 is a sectional view showing a part of the display panel PNL. The illustrated configuration example of the pixel PX corresponds to an example in which a display mode using a horizontal electric field is applied.
As shown in FIG. 7, the first substrate SUB1 includes an insulating substrate 10, insulating layers 11 to 16, a lower light-shielding layer US, a semiconductor layer SC, a switching element SW, a common electrode CE, a pixel electrode PE, and an alignment film AL1. Have. The insulating substrate 10 is formed of a resin material such as polyimide, and has flexibility and optical transparency.

The insulating layer 11 is disposed on the insulating substrate 10. The lower light-shielding layer US is located on the insulating layer 11 and is covered by the insulating layer 12. Note that the first substrate SUB1 may be formed without the insulating layer 11, and in this case, the lower light-shielding layer US is located on the insulating substrate 10. The semiconductor layer SC is located on the insulating layer 12 and is covered by the insulating layer 13. The semiconductor layer SC is formed of, for example, polycrystalline silicon, but may be formed of amorphous silicon or an oxide semiconductor.

In the switching element SW, the gate electrodes GE1 and GE2 are located on the insulating layer 13 and covered with the insulating layer 14. The gate electrodes GE1 and GE2 are electrically connected to any one of the scanning lines G shown in FIG. The source electrode SE and the drain electrode DE are located on the insulating layer 14 and are covered by the insulating layer 15. The source electrode SE is electrically connected to any of the signal lines S shown in FIG. The source electrode SE is in contact with the semiconductor layer SC via a contact hole CH1 penetrating the insulating layers 13 and. The drain electrode DE is in contact with the semiconductor layer SC via a contact hole CH2 penetrating the insulating

layers

13 and 14.

The common electrode CE is located on the insulating layer 15 and is covered by the insulating layer 16. The pixel electrode PE is located on the insulating layer 16 and is covered with the alignment film AL1. Part of the pixel electrode PE faces the common electrode CE via the insulating layer 16. The common electrode CE and the pixel electrode PE are formed of a transparent conductive material such as indium tin oxide (ITO) or indium zinc oxide (IZO). The pixel electrode PE is in contact with the drain electrode DE via a contact hole CH3 penetrating the insulating layers 15 and 16 at a position overlapping the opening of the common electrode CE. Note that the insulating layers 11 to 14 and the insulating layer 16 are inorganic insulating layers such as silicon oxide, silicon nitride, and silicon oxynitride, and may have a single-layer structure or a multilayer structure. You may. The insulating layer 15 is an organic insulating layer such as an acrylic resin.

The second substrate SUB2 includes the insulating substrate 20, the insulating layer 21, the light shielding layer BM, the color filter layer CF, the overcoat layer OC, and the alignment film AL2. The insulating substrate 20 is formed of a resin material such as polyimide, and has flexibility and optical transparency. The insulating layer 21 is an inorganic insulating layer of, for example, silicon oxide, silicon nitride, silicon oxynitride, or the like, and may have a single-layer structure or a multilayer structure. Note that the second substrate SUB2 may be formed without the insulating layer 21, and in this case, the light shielding layer BM and the color filter layer CF are located on the side of the insulating substrate 20 facing the first substrate SUB1.

(4) The light shielding layer BM and the color filter layer CF are located on the side of the insulating layer 21 facing the first substrate SUB1. The light shielding layer BM can be formed collectively using the same material as the light shielding layer LS shown in FIG. The light-shielding layer BM is arranged at a position facing a wiring portion such as the signal line S, the scanning line G, and the switching element SW. The color filter layer CF is arranged at a position facing the pixel electrode PE, and a part of the color filter layer CF overlaps the light shielding layer BM. The overcoat layer OC covers the color filter layer CF. The alignment film AL2 covers the overcoat layer OC.

The liquid crystal layer LC is located between the first substrate SUB1 and the second substrate SUB2, and is held between the alignment films AL1 and AL2. The liquid crystal layer LC contains liquid crystal molecules. Such a liquid crystal layer LC is made of a positive liquid crystal material (having a positive dielectric anisotropy) or a negative liquid crystal material (having a negative dielectric anisotropy).

FIG. 8A is a cross-sectional view showing the display device DSP along the line VIII-VIII in FIG. FIG. 8B is another cross-sectional view showing the display device DSP of FIG. 8A, and is a view showing the display panel PNL in an expanded manner.
As shown in FIG. 8, the first optical film OF1 is fixed to the display cell CL and is located between the display cell CL and the lighting device IL. The central portion H of the first optical film OF1 is in contact with the upper surface MU of the lighting device IL. The second optical film OF2 is fixed to the display cell CL, and is located on the opposite side of the first optical film OF1 with respect to the display cell CL.

The first peripheral area AP1 of the display cell CL includes a first area AP1a, a second area AP1b, a third area AP1c, and a fourth area AP1d. The first area AP1a faces the first side surface MS1. The second area AP1b is located between the first area AP1a and the central area AC, and is bent. The third area AP1c faces the lower surface MB. The fourth area AP1d is located between the first area AP1a and the third area AP1c, and is bent.

The first peripheral portion I1 of the first optical film OF1 is located at a distance from the central portion H and is in contact with the first side surface MS1 and a first portion I1a is spaced from the first portion I1a and is located on the lower surface MB. And a second portion I1b that comes into contact with the second portion I1b. The first portion I1a is located between the central portion H and the second portion I1b.

On the first peripheral portion I1 side, the first groove portion V1a is formed between the central portion H and the first portion I1a (first peripheral portion I1), opposes the first corner portion C1a, and has the first corner portion C1a. Are recessed toward the second region AP1b. Similarly, on the first peripheral portion I1 side, the second groove portion V2a is formed between the first portion I1a and the second portion I1b, faces the second corner portion C2a, and extends from the second corner portion C2a to the fourth region AP1d. It is concave toward.

The first concave portion CO1a is located in a region where the first peripheral region AP1 (first region AP1a) exists, opens toward the first protrusion P1a, is fitted with the first protrusion P1a, and is illuminated together with the first protrusion P1a. It is configured to determine a relative position of the display panel PNL with respect to the IL.

The first concave portion CO1a has a through hole penetrating the first peripheral region AP1 (first region AP1a) of the display cell CL, and a dent provided in the second optical film OF2 and connected to the through hole. I have. The first optical film OF1 exposes the first concave portion CO1a. The first concave portion CO1a does not penetrate the display panel PNL. However, unlike the present embodiment, the first concave portion CO1a may penetrate the display panel PNL. Alternatively, the first concave portion CO1a may be formed using the first optical film OF1 (first portion I1a).

The first concave portion CO1b shown in FIGS. 4 and 5 has the same configuration as the first concave portion CO1a. The first concave portion CO1b is located in a region where the first peripheral region AP1 (first region AP1a) exists, opens toward the first protrusion P1b, is fitted with the first protrusion P1b, and is illuminated together with the first protrusion P1b. It is configured to determine a relative position of the display panel PNL with respect to the IL.

The third peripheral area AP3 of the display cell CL includes a first area AP3a, a second area AP3b, a third area AP3c, and a fourth area AP3d. The first region AP3a faces the third side surface MS3. The second area AP3b is located between the first area AP3a and the central area AC, and is bent. The third area AP3c faces the lower surface MB. The fourth area AP3d is located between the first area AP3a and the third area AP3c, and is bent.

The third peripheral portion I3 of the first optical film OF1 is located at a distance from the central portion H and is in contact with the third side surface MS3, and a first portion I3a is spaced from the first portion I3a and is located on the lower surface MB. And a second portion I3b that comes into contact with the second portion I3b. The first portion I3a is located between the central portion H and the second portion I3b.

On the third peripheral portion I3 side, the first groove portion V1a is formed between the central portion H and the first portion I3a (third peripheral portion I3), faces the first corner portion C1c, and faces the first corner portion C1c. Are recessed toward the second area AP3b from Similarly, on the third peripheral portion I3 side, the second groove portion V2a is formed between the first portion I3a and the second portion I3b, faces the second corner portion C2c, and extends from the second corner portion C2c to the fourth region AP3d. It is concave toward.

Here, in the contact surface SS1 of the first portion I1a (first peripheral portion I1) that contacts the first side surface MS1, the length in the direction in which the first peripheral region AP1 extends is L1. In the contact surface SS3 of the first portion I3a (third peripheral portion I3) that contacts the third side surface MS3, the length in the direction in which the third peripheral region AP3 extends is L3. Length L1 is longer than length L3.

In the first groove portion V1a, the width between the central portion H and the first portion I1a (first peripheral portion I1) is W1a, and the width between the central portion H and the first portion I3a (third peripheral portion I3). Is W3a. The width W1a is smaller than the width W3a. In the second groove V2a, the width between the first portion I1a and the second portion I1b is W1b, and the width between the first portion I3a and the second portion I3b is W3b. The width W1b is smaller than the width W3b.

において In the display panel PNL, the thickness TC of the display cell CL is less than the thickness TO1 of the first optical film OF1. The thickness TC is smaller than the thickness TO2 of the second optical film OF2. In the present embodiment, each of the thicknesses TO1 and TO2 is at least twice the thickness TC. Illustratively, each of the insulating

substrates

10 and 20 has a thickness of substantially 10 μm, and each of the thicknesses TO1 and TO2 is substantially 100 μm.

FIG. 9A is a cross-sectional view showing the display device DSP along the line IX-IX in FIG. FIG. 9B is another cross-sectional view showing the display device DSP of FIG. 9A, and is a view showing the display panel PNL in an expanded manner.
As shown in FIG. 9, the second peripheral area AP2 of the display cell CL includes a first area AP2a, a second area AP2b, a third area AP2c, and a fourth area AP2d. The first area AP2a faces the second side surface MS2. The second area AP2b is located between the first area AP2a and the central area AC, and is bent. The third area AP2c faces the lower surface MB. The fourth area AP2d is located between the first area AP2a and the third area AP2c, and is bent.

The second peripheral portion I2 of the first optical film OF1 is located at a distance from the central portion H and is in contact with the second side surface MS2, and a first portion I2a is spaced from the first portion I2a and is located on the lower surface MB. And a second portion I2b that comes into contact with the second portion I2b. The first portion I2a is located between the central portion H and the second portion I2b.

On the second peripheral portion I2 side, the first groove portion V1a is formed between the central portion H and the first portion I2a (the second peripheral portion I2), faces the first corner portion C1b, and has the first corner portion C1b. Are recessed toward the second area AP2b from Similarly, on the second peripheral portion I2 side, the second groove portion V2a is formed between the first portion I2a and the second portion I2b, faces the second corner portion C2b, and extends from the second corner portion C2b to the fourth region AP2d. It is concave toward.

The second concave portion CO2a is located in a region where the second peripheral region AP2 (the first region AP2a) exists, opens toward the second protrusion P2a, is fitted with the second protrusion P2a, and is illuminated together with the second protrusion P2a. It is configured to determine a relative position of the display panel PNL with respect to the IL.

The second concave portion CO2a has a through hole penetrating the second peripheral region AP2 (first region AP2a) of the display cell CL, and a dent provided in the second optical film OF2 and connected to the through hole. I have. The first optical film OF1 exposes the second concave portion CO2a. The second concave portion CO2a does not penetrate the display panel PNL. However, unlike the present embodiment, the second concave portion CO2a may penetrate the display panel PNL. Alternatively, the second concave portion CO2a may be formed using the first optical film OF1 (first portion I2a).

The second concave portion CO2b shown in FIGS. 4 and 5 has the same configuration as the second concave portion CO2a. The second concave portion CO2b is located in a region where the second peripheral region AP2 (the first region AP2a) exists, opens toward the second protrusion P2b, is fitted with the second protrusion P2b, and is illuminated with the second protrusion P2b. It is configured to determine a relative position of the display panel PNL with respect to the IL.

The fourth peripheral area AP4 of the display cell CL includes a first area AP4a, a second area AP4b, a third area AP4c, and a fourth area AP4d. The first region AP4a faces the fourth side surface MS4. The second area AP4b is located between the first area AP4a and the central area AC, and is bent. The third area AP4c faces the lower surface MB. The fourth area AP4d is located between the first area AP4a and the third area AP4c, and is bent.

The fourth peripheral portion I4 of the first optical film OF1 is located at a distance from the central portion H and is in contact with the fourth side surface MS4, and a first portion I4a is spaced from the first portion I4a and is located on the lower surface MB. And a second portion I4b that comes into contact with the second portion I4b. The first portion I4a is located between the central portion H and the second portion I4b.

On the fourth peripheral portion I4 side, the first groove portion V1a is formed between the central portion H and the first portion I4a (fourth peripheral portion I4), faces the first corner portion C1d, and faces the first corner portion C1d. Are recessed toward the second area AP4b. Similarly, on the fourth peripheral portion I4 side, the second groove portion V2a is formed between the first portion I4a and the second portion I4b, faces the second corner portion C2d, and extends from the second corner portion C2d to the fourth region AP4d. It is concave toward.

Here, in the contact surface SS2 of the first portion I2a (the second peripheral portion I2) contacting the second side surface MS2, the length in the direction in which the second peripheral region AP2 extends is L2. In the contact surface SS4 of the first portion I4a (fourth peripheral portion I4) that contacts the fourth side surface MS4, the length in the direction in which the fourth peripheral region AP4 extends is L4. Length L2 is longer than length L4.

In the first groove portion V1a, the width between the central portion H and the first portion I2a (the second peripheral portion I2) is W2a, and the width between the central portion H and the first portion I4a (the fourth peripheral portion I4). Is W4a. The width W2a is smaller than the width W4a. In the second groove V2a, the width between the first portion I2a and the second portion I2b is W2b, and the width between the first portion I4a and the second portion I4b is W4b. The width W2b is smaller than the width W4b.

Next, a method of assembling the display device DSP will be described. FIG. 10 is a cross-sectional view for explaining a method of assembling the display device DSP, and is a diagram illustrating a state before the display panel PNL is bent.
As shown in FIG. 10, when assembling of the display device DSP is started, first, the illumination device IL and the display panel PNL are prepared. The drive IC DD is mounted on the display panel PNL, and the wiring board F1 is connected thereto. Next, the first protrusion P1a and the first concave portion CO1a are fitted. At this time, the first projection P1b and the first concave portion CO1b are also fitted together (FIGS. 3 and 4). Then, the first portion I1a is brought into contact with the first side surface MS1.

FIG. 11 is a cross-sectional view following FIG. 10 for explaining a method of assembling the display device DSP, and is a diagram illustrating a state where the display panel PNL is bent once.
Subsequently, as shown in FIG. 11, the display panel PNL is bent once, and the central portion H is brought into contact with the upper surface MU. Thereafter, the second protrusion P2a and the second concave portion CO2a are fitted, and the second protrusion P2b and the second concave portion CO2b are fitted (FIGS. 3 and 4). Then, the first portion I2a is brought into contact with the second side surface MS2. Next, the display panel PNL is bent along the lighting device IL (FIG. 2). Thereafter, the display panel PNL is bonded to the lower surface MB of the illumination device IL using a tape or an adhesive as a bonding means. The wiring board F1 may be bonded to the lower surface MB.
This completes the assembly of the display device DSP.

According to the display device DSP according to the embodiment configured as described above, the extension portions NDA1, NDA2, NDA3, and NDA4 of the display panel PNL can be bent along the illumination device IL. As shown in FIG. 2, the extension portions NDA1, NDA2, NDA3, and NDA4 can be folded on the back surface (lower surface MB) of the display device DSP. Thereby, the frame on the surface of the display device DSP can be reduced.

The display panel PNL has a first groove V1a and a second groove V2a. The stress applied to the display cell CL when the display panel PNL is bent can be reduced as compared with the case where the display panel PNL does not have the first groove V1a and the second groove V2a. Thereby, it is possible to reduce the occurrence of problems such as disconnection of the wiring located in the first peripheral area AP1 and the second peripheral area AP2 shown in FIG.

１The first optical film OF1 has first portions (I1a, I2a, I3a, I4a) that come into contact with the side surfaces MS (MS1, MS2, MS3, MS4) of the illumination device IL. Compared with the case where the first optical film OF1 does not have the first portion, the mechanical strength of the extension portions NDA1, NDA2, NDA3, and NDA4 can be increased, and the display panel PNL can be mounted on the illumination device IL. It can contact the side surface MS. Thereby, the occurrence of the disconnection of the wiring can be further reduced, and the occurrence of buckling at the extension portions NDA1, NDA2, NDA3, NDA4 can be reduced.

The relative position of the display panel PNL with respect to the illumination device IL is determined by the first fitting portion FI1 and the second fitting portion FI2. Compared with the case where the first fitting portion FI1 and the second fitting portion FI2 are not used, the positioning of the illumination device IL and the display panel PNL can be performed with high accuracy. The first groove portion V1a of the display panel PNL can be surely opposed to the first corner portion C1 of the illumination device IL, and the second groove portion V2a of the display panel PNL is surely opposed to the second corner portion C2 of the illumination device IL. be able to.

As described above, since the alignment accuracy can be increased, the widths W1, W2, W3, and W4 of the first groove V1a and the second groove V2a can be minimized. As a result, it is possible to suppress a decrease in mechanical strength of the extension portions NDA1, NDA2, NDA3, and NDA4. For example, L1> L3 and L2> L4 in consideration of assembly tolerance, but the lengths L3 and L4 can be made as long as possible.

The first concave portions CO1a and CO1b are provided in the extended portion NDA1 which is the long side of the display panel PNL. Since the two first concave portions CO1a and CO1b on the long side can be used for alignment, the illumination device IL is compared with the case where one first concave portion CO1 is used on the long side. And the display panel PNL can be positioned with higher accuracy.
The second concave portions CO2a and CO2b are provided in the extension portion NDA2 which is a short side of the display panel PNL. Since the two second concave portions CO2a and CO2b on the short side can be used for alignment, the illumination device IL is compared with the case where one second concave portion CO2 is used on the short side. And the display panel PNL can be positioned with higher accuracy.
The concave portions CO are provided on two sides, which are a long side and a short side, of the four sides (extending portions NDA1, NDA2, NDA3, NDA4) of the display panel PNL. Therefore, the positioning of the illumination device IL and the display panel PNL can be performed with higher accuracy.

The concave portion CO is provided in the extension portion NDA1 (first peripheral region AP1) and the extension portion NDA2 (second peripheral region AP2) where the wiring extends. When the assembly tolerance is taken into account, the extension portions NDA1 and NDA2 provided with the concave portion CO can easily reduce the widths W1 and W2, so that the mechanical strength of the extension portions NDA1 and NDA2 can be further reduced. Can be suppressed. Thereby, occurrence of troubles such as disconnection of the wiring can be further reduced.
From the above, a display device DSP that can be assembled with high accuracy can be obtained.

(Modification 1)
Next, a display device DSP according to a first modification of the embodiment will be described. FIG. 12 is a cross-sectional view illustrating a display device DSP according to Modification 1 of the embodiment. Here, the configuration of the extensions NDA1 and NDA3 of the display panel PNL will be described as a representative. However, the technology of the first modification is also applicable to the above-mentioned extending portions NDA2 and NDA4.

構成 As shown in FIG. 12, the configuration of the second optical film OF2 is different from the configuration of the second optical film OF2 of the above embodiment. The second optical film OF2 includes a central portion J, a first peripheral portion K1, and a third peripheral portion K3. The central portion J faces the central portion H of the first optical film OF1.

{Circle around (1)} The first peripheral portion K1 is located at a distance from the central portion J and faces the first peripheral portion I1 of the first optical film OF1. The first peripheral portion K1 has a first portion K1a and a second portion K1b. The first portion K1a is located at an interval in the central portion J, and faces the first portion I1a. The second portion K1b is located at an interval from the first portion K1a, and faces the second portion I1b.

The display panel PNL further has a first groove V1b and a second groove V2b. The first groove portion V1b and the second groove portion V2b are provided in the extending portions NDA1 and NDA3, respectively. Although not shown, the first groove V1b and the second groove V2b are also provided in the extending portions NDA2 and NDA4, respectively. The first groove portion V1b and the second groove portion V2b are not provided continuously, but are interrupted between adjacent extending portions.

In the extension portion NDA1, the first groove portion V1b is formed between the central portion J and the first portion K1a (first peripheral portion K1), extends along the first groove portion V1a, and extends along the first groove portion V1a. It is concave. In the extension portion NDA1, the second groove portion V2b is formed between the first portion K1a and the second portion K1b, extends along the second groove portion V2a, and is concave toward the second groove portion V2a.

第 The first concave portion CO1a of the first modification is a through hole penetrating the display panel PNL. The first concave portion CO1a has a through-hole penetrating the first peripheral region AP1 (first region AP1a) of the display cell CL. The second optical film OF2 exposes the first concave portion CO1a.

３The third peripheral portion K3 is located at a distance from the central portion J and faces the third peripheral portion I3 of the first optical film OF1. The third peripheral portion K3 has a first portion K3a and a second portion K3b. The first portion K3a is located at an interval in the central portion J, and faces the first portion I3a. The second portion K3b is located at an interval from the first portion K3a, and faces the second portion I3b.

In the extension portion NDA3, the first groove portion V1b is formed between the central portion J and the first portion K3a (third peripheral portion K3), extends along the first groove portion V1a, and extends along the first groove portion V1a. It is concave. In the extension portion NDA3, the second groove portion V2b is formed between the first portion K3a and the second portion K3b, extends along the second groove portion V2a, and is concave toward the second groove portion V2a.

変形 In the first modification configured as described above, the same effect as in the above embodiment can be obtained. In the first modification, the position of the neutral plane of the display panel PNL can be adjusted. For example, compared to the above embodiment, the position of the wiring extending in the second area AP1b and the fourth area AP1d of the display cell CL can be closer to the neutral plane of the display panel PNL. Thereby, occurrence of troubles such as disconnection of the wiring can be further reduced.

(Modification 2)
Next, a display device DSP according to a modified example 2 of the embodiment will be described. FIG. 13 is a cross-sectional view illustrating a display device DSP according to Modification 2 of the embodiment. Here, the configuration of the extensions NDA1 and NDA3 of the display panel PNL will be described as a representative. However, the technology of the second modification is also applicable to the above-mentioned extending portions NDA2 and NDA4.

As shown in FIG. 13, the second optical film OF2 may be configured without the first peripheral portion K1 and the third peripheral portion K3. The second optical film OF2 of Modification 2 has only the central portion J.
In the modified example 2 configured as described above, the same effect as in the modified example 1 can be obtained.

(Comparative Example 1)
Next, a display device DSP according to Comparative Example 1 will be described. FIG. 14 is a cross-sectional view illustrating a display device DSP according to Comparative Example 1.
As shown in FIG. 14, the display device DSP does not include the above-described first fitting portion FI1 and second fitting portion FI2. Therefore, the display device DSP of Comparative Example 1 does not include a unit that determines the relative position of the display panel PNL with respect to the illumination device IL.

For example, the center portion H contacts the first corner portion C1a, or the first portion I1a contacts the second corner portion C2a. In the extension portion NDA1, the first groove V1a does not face the first corner C1a, and the second groove V2a does not face the second corner C2a. Therefore, it is difficult for the extension portion NDA1 to exhibit the original functions of the first groove portion V1a and the second groove portion V2a.

The stress applied to the display cell CL by the central portion H in the region opposed to the first corner C1a increases, or the stress applied to the display cell CL by the first portion I1a in the region opposed to the second corner C2a increases. Or become. Therefore, it becomes difficult to reduce the occurrence of problems such as disconnection of the wiring located in the first peripheral area AP1.
From the above, in Comparative Example 1, it is difficult to obtain a display device DSP that can be assembled with high accuracy. Furthermore, it is difficult to reduce the occurrence of problems such as disconnection of wiring in the bent region of the display panel PNL.

(Comparative Example 2)
Next, a display device DSP according to Comparative Example 2 will be described. FIG. 15 is a cross-sectional view illustrating a display device DSP according to Comparative Example 2. As in Comparative Example 1, the display device DSP of Comparative Example 2 does not include means for determining the relative position of the display panel PNL with respect to the illumination device IL.

As shown in FIG. 15, the first peripheral portion I1 of the first optical film OF1 does not have the first portion I1a. Therefore, the display panel PNL is not in contact with the first side surface MS1 of the lighting device IL. As compared with the case where the first peripheral portion I1 has the first portion I1a, it is difficult to reduce the occurrence of problems such as disconnection of the wiring located in the first peripheral region AP1 or the extension portion. It may be difficult to reduce the occurrence of buckling in the NDA1.
From the above, in Comparative Example 2, it is difficult to obtain a display device DSP that can be assembled with high accuracy. Furthermore, it is difficult to reduce the occurrence of problems such as disconnection of wiring near the bent region of the display panel PNL.

Although one embodiment of the present invention has been described, the above embodiment has been presented by way of example only, and is not intended to limit the scope of the invention. The new embodiment described above can be implemented in other various forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. The above-described embodiment and its modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and their equivalents.
For example, when the groove V is provided in the display panel PNL, the first optical film OF1 and the second optical film OF2 are partially removed, but the present invention is not limited to this. For example, the thickness of each of the first optical film OF1 and the second optical film OF2 may be partially reduced, and the groove V may be provided in the display panel PNL.

Claims

A plate-shaped main body that emits light including an upper surface, a first side surface, and a first corner portion linearly extending between the upper surface and the first side surface; A lighting device having a first protrusion that protrudes;
A display cell for displaying an image including a central region facing the upper surface and a first peripheral region extending from the central region; and a first cell fixed to the display cell and located between the display cell and the lighting device. An optical film, and a display panel comprising:
The first peripheral region includes a first region facing the first side surface, and a second region that is located and bent between the first region and the central region,
The first optical film includes a central portion that contacts the upper surface, and a first peripheral portion that is located at an interval from the central portion and contacts the first side surface,
The display panel includes:
A second portion formed between the central portion and the first peripheral portion, facing the first corner portion, extending along the first corner portion, and recessed from the first corner portion toward the second region. 1 groove,
A first position which is located in a region where the first peripheral region is present and is open toward the first protrusion and which is fitted with the first protrusion to determine a relative position of the display panel with respect to the lighting device together with the first protrusion; A display device having a concave portion.
The lighting device further includes another first protrusion fixed to the main body and protruding from the first side surface and spaced from the first protrusion in a direction in which the first corner extends.
The display panel is located in a region where the first peripheral region exists, and is open toward the other first protrusion. The other first protrusion is fitted to the display panel together with the other first protrusion. The display device according to claim 1, further comprising another first concave portion that determines a relative position of the panel.
A first driver located in the first peripheral area;
2. The device according to claim 1, wherein the first recess is located on both sides of the first driver in a direction in which the first corner extends in a region where the first peripheral region exists on the display panel. 3. The display device according to the above.
The upper surface has a square shape,
The main body further includes a second side surface provided continuously from the first side surface, and another first corner portion linearly extending between the upper surface and the second side surface,
The lighting device further includes a second protrusion fixed to the main body and protruding from the second side surface,
The display cell further includes a second peripheral area extending from the central area,
The second peripheral region includes another first region facing the second side surface, and another second region located and bent between the other first region and the central region,
The first optical film further includes a second peripheral portion that is spaced apart from the central portion and contacts the second side surface,
The first groove portion is further formed between the central portion and the second peripheral portion, faces the other first corner portion, extends along the other first corner portion, and extends along the other first corner portion. Recessed from the corner toward the other second area,
The display panel is located in a region where the second peripheral region exists, and opens toward the second protrusion, the second protrusion is fitted, and the position of the display panel relative to the lighting device together with the second protrusion. 2. The display device according to claim 1, further comprising: a second concave portion that determines the following.
A second driver located in the second peripheral area;
The second recess is located on both sides of the second driver in a direction in which the other first corner extends in a region where the second peripheral region exists in the display panel. 5. The display device according to 4.
The display panel further includes a second optical film fixed to the display cell and located on the opposite side of the first optical film with respect to the display cell,
The second optical film has another central portion facing the central portion of the first optical film, and is spaced apart from the other central portion to face the first peripheral portion of the first optical film. And another first peripheral portion,
The display panel has another first groove formed between the another central portion and the other first peripheral portion and extending along the first groove and recessed toward the first groove. The display device according to claim 1.
The main body further includes a lower surface opposite to the upper surface, and a second corner portion linearly extending between the first side surface and the lower surface,
The first peripheral region includes a third region facing the lower surface, and a fourth region positioned and bent between the first region and the third region,
A first portion that is spaced apart from the central portion and contacts the first side surface, and a second portion that is spaced apart from the first portion and contacts the lower surface; Has,
The display panel is formed between the first portion and the second portion, faces the second corner, extends along the second corner, and extends from the second corner to the first peripheral region. The display device according to claim 1, further comprising a second groove recessed toward the fourth region.
The display panel further includes a second optical film fixed to the display cell and located on the opposite side of the first optical film with respect to the display cell,
The second optical film includes another central portion facing the central portion of the first optical film, and another first peripheral portion facing the first peripheral portion,
The other first peripheral portion is located at an interval at the other central portion and is opposite to the first portion, and the first portion is located at an interval at the other first portion. And a second portion facing the other portion,
The display panel includes:
Another first groove formed between the other central portion and the other first portion and extending along the first groove and recessed toward the first groove;
And a second groove portion formed between the another first portion and the other second portion and extending along the second groove portion and recessed toward the second groove portion. 8. The display device according to 7.
The upper surface has a square shape,
The main body further includes a third side surface opposite to the first side surface, and another first corner portion linearly extending between the upper surface and the third side surface,
The display cell further includes a third peripheral area extending from the central area,
The third peripheral region includes another first region facing the third side surface, and another second region that is located and bent between the other first region and the central region,
The first optical film further includes a third peripheral portion that is spaced apart from the central portion and contacts the third side surface,
The first groove portion is further formed between the central portion and the third peripheral portion, faces the other first corner portion, extends along the other first corner portion, and extends along the other first corner portion. The display device according to claim 1, wherein the display device is recessed from a corner toward the other second region.
The length in the direction in which the first peripheral region extends on the contact surface of the first peripheral portion that contacts the first side surface is the same as the length of the contact surface of the third peripheral portion that contacts the third side surface. The display device according to claim 9, wherein the third peripheral region is longer than a length in a direction in which the third peripheral region extends.
The display device according to claim 9, wherein, in the first groove, a width between the central portion and the first peripheral portion is smaller than a width between the central portion and the third peripheral portion.
The first recess has a through-hole penetrating the first peripheral region of the display cell,
The display device according to claim 1, wherein the first optical film exposes the first recess.
The display panel further includes a second optical film fixed to the display cell and located on the opposite side of the first optical film with respect to the display cell,
The second optical film has a dent connected to the through hole,
The display device according to claim 12, wherein the first recess further includes the depression.
The display device according to claim 1, wherein in the display panel, the thickness of the display cell is less than the thickness of the first optical film.
The display device according to claim 1, wherein the first optical film includes a polarizing plate.
The display cell includes a first insulating substrate formed of a resin, a second insulating substrate formed of a resin and opposed to the first insulating substrate with a gap therebetween, and the first insulating substrate and the second insulating substrate. The display device according to claim 1, further comprising: a liquid crystal layer held between the substrate and the substrate.