JP5343686B2 - Liquid crystal panel and display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve durability by reducing disconnection of a flexible substrate, even in a liquid crystal panel which displays 120 frames or more per one second, with resolution of 1,920 dots&times;1,080 dots or more, and a display device equipped with the same. <P>SOLUTION: The liquid crystal panel 2 displays 120 frames or more per one second, with resolution of 1,920 dots&times;1,080 dots or more. A stress relaxation size ratio H/Ls that is a ratio of longitudinal-direction length H of a source substrate to the stress relaxation length Ls is 7.5 or less, wherein the shortest distance length is the stress relaxation length Ls, among a distance from an edge section at a glass substrate 4 side of a semiconductor chip 12 provided on the flexible substrate 3, to a glass substrate connection section 7, a distance from an edge section at a source substrate 5 side of the semiconductor chip 12 provided on the flexible substrate 3, to a source substrate connection section 6, and a distance from the glass substrate connection section 7 to the source substrate connection section 6. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a liquid crystal panel that displays an image by applying a voltage to liquid crystal, and a display device including the same.

  In recent years, with the progress of flattening of television receivers and the like, the size of display devices has been increased. Therefore, thermal deformation due to the difference in thermal expansion coefficient between the source substrate arranged along the edge of the liquid crystal panel and the glass substrate arranged in front of the liquid crystal panel, or warpage of the glass substrate or the liquid crystal panel due to thermal deformation. There is a problem that the flexible substrate connecting between the source substrate and the glass substrate is repeatedly disconnected and broken or broken, thereby causing a display defect.

  In some conventional liquid crystal panels, incompletely connected portions are formed by performing slit processing or punching processing on the source substrate in order to suppress disconnection of the flexible substrate and suppress occurrence of display defects. (For example, refer to Patent Document 1).

JP-A-2004-61715 (pages 5-7, FIG. 1)

However, in the liquid crystal panel described in Patent Document 1, it is possible to reduce the warpage of the source substrate, but it is not possible to reduce the thermal deformation caused by the difference in thermal expansion coefficient. In addition, the flexible substrate may be disconnected due to vibration during manufacture, assembly, and transportation, but the liquid crystal panel described in Patent Document 1 cannot reduce this.
Furthermore, recent liquid crystal panels are larger in size and have a resolution of 1920 dots × 1080 dots or more, and the amount of heat generation is increased by displaying 120 frames or more per second, resulting in a difference in thermal expansion coefficient. The amount of thermal deformation is also increasing.
The present invention has been made to solve the above-described problems, and has a resolution of 1920 dots × 1080 dots or higher and a liquid crystal panel that displays 120 frames or more per second and a display device including the same Is intended to reduce the disconnection of the flexible substrate and improve the durability.

The liquid crystal panel according to the present invention is a liquid crystal panel having a resolution of 1920 dots × 1080 dots or more and displaying 120 frames or more per second, the glass substrate installed in front of a plate-like liquid crystal panel frame, the liquid crystal A source substrate installed on an end face of the panel frame; and a glass substrate connecting portion that is a connecting portion between the glass substrate and a source substrate connecting portion that is a connecting portion between the source substrate and the glass substrate and the source substrate. comprises a flexible board for connecting the door, the flexible semiconductor chip is provided on the substrate, the distance between the front SL and the glass substrate side of the end portion of the semi-conductor chip the glass substrate connecting portion, before Symbol half The shortest length of the distance between the end of the conductor chip on the source substrate side and the source substrate connecting portion and the distance between the glass substrate connecting portion and the source substrate connecting portion is adjusted. When relaxed length, stress relaxation length ratio with respect to the stress relaxation length of the longitudinal length of the source substrate is of 7.5 or less.
A display device according to the present invention includes the liquid crystal panel.

  According to the liquid crystal panel and the display device of the present invention, the flexible substrate is disconnected even in the liquid crystal panel having a resolution of 1920 dots × 1080 dots or more and displaying 120 frames or more per second and the display device including the same. , And durability can be improved.

1 is a perspective view of a display device according to Embodiment 1 of the present invention. It is the perspective view of the liquid crystal panel by Embodiment 1 of this invention, and the perspective view which expanded the part of the flexible substrate. It is the enlarged view which expand | deployed the part of the flexible substrate of the liquid crystal panel by Embodiment 1 of this invention on the plane. It is a figure which shows the relationship between the durability ratio and stress relaxation dimension ratio of the liquid crystal panel by Embodiment 1 of this invention and the conventional liquid crystal panel. It is the enlarged view which expand | deployed the part of the flexible substrate of the liquid crystal panel by Embodiment 2 of this invention on the plane. It is the enlarged view which expand | deployed the part of the flexible substrate of the liquid crystal panel by Embodiment 3 of this invention on the plane. It is the enlarged view which expand | deployed the part of the flexible substrate of the liquid crystal panel by Embodiment 4 of this invention on the plane. It is the enlarged view which expand | deployed the part of the flexible substrate of the liquid crystal panel by Embodiment 5 of this invention on the plane. It is an example of the enlarged view which expand | deployed the part of the flexible substrate of the liquid crystal panel by Embodiment 6 of this invention on the plane.

Embodiment 1 FIG.
FIG. 1 is a perspective view of a display device according to Embodiment 1 of the present invention. FIG. 2A is a perspective view of the liquid crystal panel according to the first embodiment of the present invention, and FIG. 2B shows the portion of the flexible substrate of the liquid crystal panel according to the first embodiment of the present invention. It is the expanded perspective view. In the drawings, the same reference numerals are the same or equivalent, and this is common throughout the entire specification.

  As shown in FIG. 1, the display device 100 includes the liquid crystal panel 2 shown in FIG. Further, as shown in FIG. 2, the liquid crystal panel 2 includes a plate-like liquid crystal panel frame 9 constituted by a backlight unit and a resin frame, a plate-like glass substrate 4 installed on the front surface of the liquid crystal panel frame 9, The source substrate 5 provided on the end face (upper surface in FIG. 2) of the liquid crystal panel frame 9, and COF (Chip-On-Film) and TCP (Tape-Carrier-) that electrically connect the glass substrate 4 and the source substrate 5 to each other. A flexible substrate 3 such as a package) is provided. The source substrate 5 is positioned and fixed to the liquid crystal panel frame 9 by a source substrate fixing portion 8 such as a boss, a screw, or a gasket. The flexible substrate 3 and the source substrate 5 are connected via the source substrate connecting portion 6, and the flexible substrate 3 and the glass substrate 4 are connected via the glass substrate connecting portion 7, and these connecting portions 6 and 6 are connected. 7 are connected using an anisotropic conductive film (ACF) or the like. A semiconductor chip 12 having a drive circuit is provided on the flexible substrate 3.

  In the above configuration, the thermal expansion coefficient between the glass substrate 4 made of glass or the like and the source substrate 5 or liquid crystal panel frame 9 made of resin or the like due to heat generated when the liquid crystal panel 2 is used. Due to this difference, a difference occurs in the deformation amount in the shear direction 10 (longitudinal direction of the glass substrate 4 and the source substrate 5) between the glass substrate 4 and the source substrate 5. For this reason, the installation portion of the semiconductor chip 12 of the flexible substrate 3 that connects the glass substrate 5 and the source substrate 5, the source substrate connection portion 6, the glass substrate connection portion 7, etc. A repeated load acts on the stress concentration part.

  In particular, the liquid crystal panel 2 having a resolution of 1920 dots × 1080 dots or more and capable of displaying 120 frames or more per second according to the present invention has a resolution of less than 1920 dots × 1080 dots and a resolution of less than 120 frames per second. (For example, a liquid crystal panel having a resolution of 1024 dots × 768 dots and capable of displaying 60 frames per second), the glass substrate 4, the source substrate 5 and the liquid crystal panel frame 9 are in proportion to the dimensions of the liquid crystal panel. As the size in the longitudinal direction increases, the amount of heat generation increases as the number of display frames per second increases, and the difference in deformation in the shear direction 10 between the glass substrate 4 and the source substrate 5 also increases. Therefore, in the liquid crystal panel 2 according to the present invention, the stress on the stress concentration portion is remarkably increased as compared with the conventional liquid crystal panel, and the influence on the disconnection of the flexible substrate 3 is increased. Further, the length of the connection direction between the flexible substrate 3 and the source substrate 5 and the glass substrate 4 is shortened by reducing the width (narrow frame) or reducing the thickness (thinning) of the peripheral portion of the screen in the display device 100. As a result, the stress on the stress concentration portion is remarkably increased and the influence on the disconnection of the flexible substrate 3 is increased. In addition, as shown in FIG. 2, when the source substrate 5 is fixed to the liquid crystal panel frame 9 via the source substrate fixing portion 8, the deformation of the liquid crystal panel frame 9 having a thermal expansion coefficient larger than that of the source substrate 5. Then, the deformation of the source substrate 5 follows, the difference in the deformation amount in the shear direction 10 between the source substrate 5 and the glass substrate 4 increases, and the influence on the disconnection of the flexible substrate 3 increases.

FIG. 3A is an example of an enlarged view in which a portion of the flexible substrate of the liquid crystal panel according to Embodiment 1 of the present invention is developed on a plane, and FIG. 3B is another example.
The stress acting on the stress concentration portion of the flexible substrate 3 becomes shorter as the distance between the source substrate connection portion 6, the glass substrate connection portion 7, which is the stress concentration portion, and the installation portion of the semiconductor chip 12 on the flexible substrate 3 is shorter. Becomes larger. Here, the distance L1 between the end of the semiconductor chip 12 on the flexible substrate 3 on the source substrate 5 side and the source substrate connecting portion 6, and the end of the semiconductor chip 12 on the flexible substrate 3 on the glass substrate 4 side. The shortest distance among the distance L2 between the glass substrate connecting portion 7 and the distance L3 between the glass substrate connecting portion 7 and the source substrate connecting portion 6 is defined as a stress relaxation length Ls. In FIG. 3A, since the semiconductor chip 12 is disposed on the flexible substrate 3 at a position closer to the glass substrate 4 than the source substrate 6, the source substrate connection portion 6, the glass substrate connection portion 7, and the possible Of the distances L1, L2, and L3 between the installed portions of the semiconductor chip 12 on the flexible substrate 3, the distance between the glass substrate 4 side end of the semiconductor chip 12 on the flexible substrate 3 and the glass substrate connecting portion 7 L2 is the shortest and becomes the stress relaxation length Ls. In FIG. 3A, since the three semiconductor chips 12 are arranged on the flexible substrate at a position closer to the source substrate 5 than to the glass substrate 4, the source substrate connecting portion 6 and the glass substrate connecting portion are arranged. 7 and the distance L1 between the end of the semiconductor chip 12 on the glass substrate 4 side and the glass substrate connecting portion 7 among the distances L1, L2, and L3 between the installed portions of the semiconductor chip 12 and the stress relaxation length Ls. Become.

FIG. 4 is a diagram showing the relationship between the durability ratio and the stress relaxation dimension ratio of the liquid crystal panel according to Embodiment 1 of the present invention and the conventional liquid crystal panel.
4 is a value obtained by dividing the length H of the source substrate 5 in the longitudinal direction by the stress relaxation length Ls (the length H of the source substrate 5 in the longitudinal direction with respect to the stress relaxation length Ls). Ratio) H / Ls, which is a parameter representing the shear load acting on the flexible substrate 3. Further, the durability ratio on the horizontal axis in FIG. 4 indicates that the durability of the flexible substrate of the liquid crystal panel has a resolution of 1024 dots × 768 dots and can display 60 frames per second. Normalized by the standard value of sex. The durability of the flexible substrate 3 is obtained from the stress acting on the flexible substrate by stress analysis using a finite element method, and obtained from the obtained stress and the fatigue strength characteristics of copper which is the wiring of the flexible substrate. .

  In FIG. 4, a flexible substrate of a liquid crystal panel capable of displaying 120 frames per second with a resolution of 1920 dots × 1080 dots indicated by solid lines and white circles has a resolution of 1024 dots × 768 dots indicated by broken lines and black circles. Compared with a flexible substrate of a liquid crystal panel capable of displaying 60 frames per second, the durability is greatly inferior.

  Therefore, in the liquid crystal panel according to the first embodiment of the present invention, the durability is a resolution of 1024 dots × 768 dots, which is higher than the reference value of the durability of the flexible substrate of the liquid crystal panel capable of displaying 60 frames per second. Therefore, the distances L1, L2, and L3 between the source substrate connection portion 6, the glass substrate connection portion 7 and the semiconductor chip 12 installation portion and the length of the source substrate 5 are set so that the stress relaxation dimension ratio is 7.5 or less. The direction length H is set. In the liquid crystal panel 2 having a resolution of 1920 dots × 1080 dots and capable of displaying 120 frames per second, the stress relaxation dimension ratio of the flexible substrate 3 is configured to be 7.5 or less. Since stress can be reduced and disconnection can also be reduced, the resolution is 1024 dots × 768 dots, and the durability can be equal to or higher than that of a liquid crystal panel capable of displaying 60 frames per second. Further, since the strength of the flexible substrate 3 is improved, disconnection due to vibration during manufacturing, assembly, and transportation can be reduced, and durability can be improved. Therefore, even in the display device 100 including the liquid crystal panel 2 having a resolution of 1920 dots × 1080 dots and capable of displaying 120 frames per second, the liquid crystal is adjusted so that the stress relaxation dimension ratio of the flexible substrate 3 is 7.5 or less. By configuring the panel 2, the durability of the display device 100 can be improved.

  Further, as shown in FIG. 4, the durability ratio of the flexible substrate 3 of the liquid crystal panel 2 having a resolution of 1920 dots × 1080 dots and capable of displaying 120 frames per second is 5.0 or less. By doing so, it is remarkably improved. Therefore, in the liquid crystal panel 2 according to the first embodiment of the present invention, by configuring the stress relaxation dimension ratio to be 5.0 or less, the stress at the stress concentration portion can be further reduced, and the flexible substrate 3 Since disconnection can be further reduced, the durability of the liquid crystal panel 2 can be further improved. Therefore, also in the display device 100 including the liquid crystal panel 2 according to the first embodiment of the present invention, the liquid crystal panel 2 is configured such that the stress relaxation dimension ratio of the flexible substrate 3 is 5.0 or less. The durability of the device 100 can be improved.

  In the liquid crystal panel 2 according to the first embodiment of the present invention, the source substrate 5 is provided on the upper surface of the liquid crystal panel frame 9, but the source substrate 5 may be provided on the lower surface or side surface of the liquid crystal panel frame 9.

  Further, in the liquid crystal panel 2 shown in the first embodiment, the case where two source substrates 5 are arranged in the longitudinal direction of the liquid crystal panel frame 9 is shown, but the length of the source substrate 5 in the longitudinal direction is shortened. Three or more source substrates 5 may be arranged in the longitudinal direction of the liquid crystal panel frame 9. By reducing the length H of the source substrate 5 in the longitudinal direction, the stress relaxation dimension ratio H / Ls can be reduced, and the durability of the liquid crystal panel 2 can be improved. Also, the liquid crystal panel 2 in which three or more source substrates 5 are arranged in the longitudinal direction of the liquid crystal panel frame 9 has the same stress relaxation dimension ratio H / Ls, and two source substrates 5 are arranged in the longitudinal direction of the liquid crystal panel frame 9. Compared to the liquid crystal panel, the stress relaxation length Ls can be shortened, and the liquid crystal panel 2 can be narrowed or thinned.

Embodiment 2. FIG.
FIG. 5 is an enlarged view in which a portion of a flexible substrate of a liquid crystal panel according to Embodiment 2 of the present invention is developed on a plane.
In the liquid crystal panel 2 shown in the first embodiment, the semiconductor chip 12 having the drive circuit is provided on the flexible substrate 3, but in the liquid crystal panel 2 shown in the second embodiment, the semiconductor having the drive circuit is provided. The point which has provided the chip | tip 12 on the glass substrate 4 differs from the liquid crystal panel 2 shown in Embodiment 1. FIG. Other configurations and functions are the same as those of the liquid crystal panel described in Embodiment 1.

  As shown in FIG. 5, in the liquid crystal panel 2 shown in the second embodiment, since the semiconductor chip 12 is not on the flexible substrate 3 but on the glass substrate 4, the stress concentration portion of the flexible substrate 3 is present. Of the distances L1, L2, and L3 between the source substrate connecting portion 6, the glass substrate connecting portion 7, and the placement portion of the semiconductor chip 12 on the flexible substrate 3, the source of the semiconductor chip 12 on the flexible substrate 3 There is no distance L1 between the end portion on the substrate 5 side and the source substrate connecting portion 6 and the distance L2 between the end portion on the glass substrate 4 side of the semiconductor chip 12 on the flexible substrate 3 and the glass substrate connecting portion 7. Therefore, in the liquid crystal panel 2 shown in the second embodiment, the distance L3 between the glass substrate connecting portion 7 and the source substrate connecting portion 6 is the stress relaxation length Ls. Therefore, the liquid crystal panel 2 and the display device 100 including the liquid crystal panel 2 shown in the second embodiment have the stress relaxation dimension obtained from the distance L3 between the glass substrate connecting portion 7 and the source substrate connecting portion 6 having the stress relaxation length Ls. By setting the ratio H / Ls to 7.5 or less, the durability can be improved in the same manner as the liquid crystal panel 2 and the display device 100 including the liquid crystal panel 2 described in the first embodiment.

  Further, the flexible substrate 3 of the liquid crystal panel 2 shown in the second embodiment is the liquid crystal shown in the first embodiment in which the distance L3 between the glass substrate connecting portion 7 and the source substrate connecting portion 6 of the flexible substrate 3 is equal. Compared with the flexible substrate 3 of the panel 2, the stress relaxation length Ls can be increased, and the stress relaxation dimension ratio can be decreased. Therefore, durability of the liquid crystal panel 2 and the display device 100 including the same can be improved. Further, in the liquid crystal panel 2 and the display device 100 shown in the second embodiment, the liquid crystal shown in the first embodiment has the same stress relaxation length Ls, the length H of the source substrate 5 in the longitudinal direction, and the stress relaxation dimension ratio H / Ls. Compared with the panel 2 and the display device 100, the distance L3 between the glass substrate connecting portion 7 and the source substrate connecting portion 6 of the flexible substrate 3 can be shortened, and the liquid crystal panel 2 can be narrowed or thinned. Can do.

Embodiment 3 FIG.
FIG. 6A is an example of an enlarged view in which a portion of a flexible substrate of a liquid crystal panel according to Embodiment 3 of the present invention is developed on a plane, and FIG. 6A and FIG. It is an example.
In the liquid crystal panel 2 shown in this Embodiment 3, the point which provided the slit 15 in the direction which connects the source substrate 5 and the glass substrate 4 to the flexible substrate 3 differs from the liquid crystal panel 2 shown in Embodiment 1. Is different. Other configurations and functions are the same as those of the liquid crystal panel described in Embodiment 1.
In FIG. 6A, a plurality of slits 15 are provided in a region between the semiconductor chip 12 and the source substrate connecting portion 6 of the flexible substrate 3, and in FIG. A plurality of slits 15 are provided in a region between the three semiconductor chips 12 and the glass substrate connecting portion 7. In FIG. 6C, the region between the semiconductor chip 12 of the flexible substrate 3 and the source substrate connecting portion 6 and the region between the semiconductor chip 12 of the flexible substrate 3 and the glass substrate connecting portion 7 are also shown. A plurality of slits 15 are provided in both areas.

  By providing the slit 15 in the flexible substrate 3, the deformation in the shearing direction 10 of the flexible substrate 3 can be absorbed by the slit 15, so that the stress at the stress concentration portion can be reduced, and the flexible substrate 3. Can be reduced, and the durability of the liquid crystal panel 2 and the display device 100 including the same can be improved. Further, since the stress relaxation length Ls can be shortened by the amount that the deformation in the shear direction 10 of the flexible substrate 3 can be absorbed by the slit 15, the durability is high and the width of the peripheral portion of the screen is small (narrowed frame) or A thin (thinned) liquid crystal panel 2 and a display device using the same can be obtained.

In particular, if the slit 15 is formed in the flexible substrate 3 between the semiconductor chip 12 having a small number of wires and high durability and the source substrate connecting portion 6, the semiconductor chip 12 having a large number of wires and low durability. Since the load which acts on the area | region between the glass substrate connection part 8 can be relieve | moderated, higher durability can be acquired.
Moreover, in the liquid crystal panel 2 shown in this Embodiment 3, the case where the slit was provided in the flexible substrate 3 in which the semiconductor chip 12 was provided was shown, but the semiconductor chip 12 shown in Embodiment 2 is replaced with a glass substrate. Even if the slit 15 is provided in the flexible substrate 3 provided on the semiconductor substrate 12 and provided with no semiconductor chip 12, the stress at the stress concentration portion can be reduced and the disconnection of the flexible substrate 3 can be reduced. Therefore, durability of the liquid crystal panel 2 and the display device 100 including the same can be improved.
In addition, in the liquid crystal panel 2 shown in this Embodiment 3, although the case where the slit was provided in the flexible substrate 3 was shown, one slit may be sufficient.

Embodiment 4 FIG.
FIG. 7 is an example of an enlarged view in which a portion of a flexible substrate of a liquid crystal panel according to Embodiment 4 of the present invention is developed on a plane.
In the liquid crystal panel 2 shown in the third embodiment, the slit 15 is provided in the flexible substrate 3 in the direction connecting the source substrate 5 and the glass substrate 4, but the liquid crystal panel 2 shown in the fourth embodiment of the present invention. 3 differs from the liquid crystal panel 2 shown in Embodiment 3 in that the slit 16 is provided in the flexible substrate 3 in a direction in which the source substrate 5 and the glass substrate 4 are connected. Other configurations and functions are the same as those of the liquid crystal panel described in Embodiment 3.
7 (a1) and 7 (a2), a plurality of slits 16 are provided in a region between the semiconductor chip 12 of the flexible substrate and the source substrate connecting portion 6, and FIG. 7 (b1) and FIG. 7 (b2), a plurality of slits 16 are provided in a region between the semiconductor chip 12 of the flexible substrate 3 and the glass substrate connecting portion 7. 6 (c1) and 7 (c2), the region between the semiconductor chip 12 of the flexible substrate 3 and the source substrate connection portion 6 and the connection between the semiconductor chip 12 of the flexible substrate 3 and the glass substrate. A plurality of slits 16 are provided in both of the regions between the portions 7. The direction of the arrow in FIG. 7 is the direction of relative displacement of the glass substrate 4 with respect to the source substrate 5 and the direction of the shearing force acting on the flexible substrate 3.

By providing the flexible substrate 3 with the slit 16 inclined with respect to the direction in which the source substrate 5 and the glass substrate 4 are connected, the slit 16 becomes parallel to the deformation of the flexible substrate 3 and the stress concentration portion. Not only can the stress acting on the slit 16 be relaxed.
Therefore, the slit 16 is preferably parallel to the direction connecting the source substrate connecting portion 7 and the glass substrate connecting portion 8 in the direction in which the glass substrate 4 is relatively displaced relative to the source substrate 5.
According to the liquid crystal panel 2 having the above-described configuration and the display device 100 having the same, the durability can be further improved as compared with the liquid crystal panel 2 shown in the third embodiment and the display device 100 having the same. The width of the peripheral portion of the screen can be made smaller (narrow frame) or the thickness can be made thinner (thinner).

Embodiment 5 FIG.
FIG. 8 is an example of an enlarged view in which a portion of a flexible substrate of a liquid crystal panel according to Embodiment 5 of the present invention is developed on a plane.
In the liquid crystal panel 2 shown in Embodiment 1, the source substrate connecting portion 5 of the flexible substrate 3 is provided on the front side (glass substrate 4 side) from the center of the source substrate 5. In the liquid crystal panel 2 shown in the fifth embodiment, the source substrate connecting portion 5 of the flexible substrate 3 is provided on the back side (the side opposite to the glass substrate 4) from the center of the source substrate 5. 1 is different from the liquid crystal panel 2 shown in FIG. Other configurations and functions are the same as those of the liquid crystal panel described in Embodiment 1.

  Further, in the liquid crystal panel 2 shown in the fifth embodiment, as shown in FIG. 8, the source substrate connecting portion 5 of the flexible substrate 3 is placed on the back side (the side opposite to the glass substrate 4) from the center of the source substrate 5. Since the liquid crystal panel is the same as the liquid crystal panel 2 shown in the first embodiment and the width and thickness of the peripheral portion of the screen are the same, and the positions of the source substrate 5 and the glass substrate 4 are the same, the glass substrate The distance L3 between the connection part 7 and the source substrate connection part 6 can be increased. Therefore, in the liquid crystal panel 2 shown in the fifth embodiment, the distance L1 between the end of the semiconductor chip 12 on the flexible substrate 3 on the source substrate 5 side and the source substrate connecting portion 6 or on the flexible substrate 3. The distance L2 between the end of the semiconductor chip 12 on the glass substrate 4 side and the glass substrate connecting portion 7 can also be increased. Therefore, in the liquid crystal panel 2 and the display device 100 shown in the fifth embodiment, the stress relaxation length Ls can be made longer than that of the liquid crystal panel 2 shown in the first embodiment, and the stress relaxation dimension ratio can be reduced. Can be improved.

Further, the liquid crystal panel 2 and the display device 100 including the same shown in the fifth embodiment are shown in the first embodiment in which the stress relaxation length Ls, the length a of the source substrate 5 in the longitudinal direction, and the stress relaxation dimension ratio are equal. Compared with the liquid crystal panel 2 and the display device 100, the distance L3 between the glass substrate connecting portion 7 and the source substrate connecting portion 6 of the flexible substrate 3 can be shortened, and the liquid crystal panel 2 is narrowed or thinned. be able to.
In the liquid crystal panel 2 and the display device 100 including the liquid crystal panel 2 shown in the fifth embodiment, the semiconductor chip 12 is provided on the flexible substrate 3, but the semiconductor chip 12 is provided on the glass substrate 4. By providing, durability can be improved more, or a frame can be narrowed or made thinner.

Embodiment 6 FIG.
FIG. 9 is an example of an enlarged view in which a portion of a flexible substrate of a liquid crystal panel according to Embodiment 6 of the present invention is developed on a plane.
In the source substrate 5 of the liquid crystal panel 2 shown in this Embodiment 6, the point which has the recessed part 18 in the position in which the flexible substrate 3 of the edge part of the front side (glass substrate 4 side) was provided is Embodiment 1. FIG. This is different from the liquid crystal panel 2 shown in FIG. Other configurations and functions are the same as those of the liquid crystal panel described in Embodiment 1.

As shown in FIG. 9, the recess 18 is provided at the end of the source substrate 5 on the front surface side (glass substrate 4 side) where the flexible substrate 3 is provided. It can be provided on the source substrate 5 side, and the degree of freedom in the mounting position of the semiconductor chip 12 is increased. Therefore, the stress relaxation length Ls of the liquid crystal panel 2 can be increased, and the durability of the liquid crystal panel can be further improved. In particular, the stress relaxation length Ls of the liquid crystal panel 2 can be increased by providing the source substrate connecting portion 6 on the back side (opposite side of the glass substrate 4) from the center of the flexible substrate 3. Durability can be further improved.
Further, when the semiconductor chip 12 is mounted at a position close to the source substrate 5, even if the glass substrate 4 is displaced relative to the source substrate 5 and the flexible substrate 3 is deformed, the semiconductor chip 12 and Contact with the source substrate 5 can be avoided, damage to the semiconductor chip 12 can be prevented, and durability of the liquid crystal panel can be improved.

  DESCRIPTION OF SYMBOLS 1 Case, 2 Liquid crystal panel, 3 Flexible substrate, 4 Glass substrate, 5 Source substrate, 6 Source substrate connection part, 7 Glass substrate connection part, 8, 9 Liquid crystal panel frame, 10 Shear direction, 12 Semiconductor chip, 15 Slit, 16 slit, 18 recess, 100 display device.

Claims (8)

A liquid crystal panel having a resolution of 1920 dots × 1080 dots or more and displaying 120 frames or more per second,
A glass substrate installed in front of a plate-shaped LCD panel frame;
A source substrate installed on an end face of the liquid crystal panel frame;
And a glass substrate connecting portion that is a connecting portion with the glass substrate and a source substrate connecting portion that is a connecting portion between the source substrate, and a flexible substrate that connects the glass substrate and the source substrate,
A semiconductor chip is provided on the flexible substrate;
The distance between the front SL and the glass substrate side of the end portion of the semi-conductor chip the glass substrate connecting portion, before Symbol distance and the glass substrate connection to the source substrate end of the semi-conductor chip and the source substrate connecting portion If the shortest length of the distance between the portion and the source substrate connecting portion is the stress relaxation length, the stress relaxation dimension ratio, which is the ratio of the length in the longitudinal direction of the source substrate to the stress relaxation length, is 7.5. A liquid crystal panel characterized by:   2. The liquid crystal panel according to claim 1, wherein the stress relaxation dimension ratio is 5.0 or less.   The liquid crystal panel according to claim 1, wherein the source substrate connecting portion is provided on the opposite side of the source substrate from the glass substrate.   The liquid crystal panel according to claim 1, wherein a slit is provided in the flexible substrate.   The liquid crystal panel according to claim 4, wherein the slit is provided between the semiconductor chip on the flexible substrate and the source substrate connecting portion.   The liquid crystal panel according to claim 4, wherein the slit is inclined with respect to a direction in which the source substrate and the glass substrate are connected. A semiconductor chip is provided on the flexible substrate;
The liquid crystal panel according to any one of claims 1 to 6, wherein the source substrate has a recess at a position where the flexible substrate is provided at an end portion on the glass substrate side. Display apparatus comprising the liquid crystal panel according to any one of claims 1 to 7.

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