JP2013068895A - Liquid crystal display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the degradation of display quality without increasing thickness.SOLUTION: A liquid crystal display device has a liquid crystal display panel 10 having an upper glass substrate 12 and a lower glass substrate 14 for sandwiching liquid crystal therebetween; and a backlight 22 for emitting light in a planar shape to the liquid crystal display panel 10 from the lower glass substrate 14 side. The upper glass substrate 12 and the lower glass substrate 14 respectively have: upper surfaces 34u and 34d turning to the opposite side to the back light 22; lower surfaces 36u and 36d turning to the backlight 22; and peripheral end surfaces 38u and 38d connecting the upper surfaces 34u and 34d and the lower surfaces 36u and 36d. The peripheral end surfaces 38u and 38d of the upper glass substrate 12 and the lower glass substrate 14 include forward tapered end surfaces 40u and 40d tilting to a slanting upper side, by outwardly projecting the lower surfaces 36u and 36d than the upper surfaces 34u and 34d. The forward tapered end surfaces 40u and 40d are rouch surfaces.

Description

  The present invention relates to a liquid crystal display device.

  A liquid crystal display device equipped with a backlight can display a bright image by the light of the backlight entering the liquid crystal display panel. A part of the light of the backlight enters the glass substrate of the liquid crystal display panel, travels inside, reflects off the end surface of the glass substrate, and exits from the display surface. For this reason, the end of the glass substrate appears to shine, and there is a problem that the display quality is impaired.

Japanese Patent Laid-Open No. 9-152584

  In Patent Document 1, in order to eliminate the light leakage of the backlight that leaks from between the outer periphery of the display area and the frame, the edge of the glass substrate is covered with the frame and a light-absorbing adhesive is applied to the display area. A method of eliminating light leakage of the backlight leaking from between the outer periphery of the frame and the frame is disclosed.

  However, in this method, the thickness of the liquid crystal display device is increased by having the frame and the light-absorbing adhesive, which is disadvantageous for the reduction in thickness.

  An object of the present invention is to prevent deterioration in display quality without increasing the thickness.

  (1) A liquid crystal display device according to the present invention emits light in a planar shape from the lower glass substrate side to the liquid crystal display panel having an upper glass substrate and a lower glass substrate for sandwiching liquid crystal, and the liquid crystal display panel. A backlight, and each of the upper glass substrate and the lower glass substrate has an upper surface that faces away from the backlight, a lower surface that faces the backlight, and a periphery that connects the upper surface and the lower surface. The peripheral end surface of at least one of the upper glass substrate and the lower glass substrate has a forward tapered end surface that is inclined so as to face obliquely upward with the lower surface protruding outward from the upper surface. In addition, the forward tapered end surface is a rough surface. According to the present invention, the forward taper end surface can reflect the light entering from the lower surface in the downward direction, thereby preventing the end of the glass substrate from being seen shining, without increasing the thickness, Deterioration of display quality can be prevented. Further, since the forward tapered end face is a rough surface, the light reflected inside can be diffused, so that the inclination angle of the forward tapered end face can be made gentle.

  (2) In the liquid crystal display device described in (1), each of the peripheral end surfaces of the upper glass substrate and the lower glass substrate may include the forward tapered end surface.

  (3) In the liquid crystal display device described in (1), one of the peripheral end surfaces of the upper glass substrate and the lower glass substrate includes the forward tapered end surface, and the other of the upper glass substrate and the lower glass substrate. The peripheral end surface of the substrate may be connected to the upper surface and the lower surface at a right angle.

  (4) In the liquid crystal display device described in (1), the liquid crystal display device further includes a wiring made of a light reflecting film disposed between the upper glass substrate and the lower glass substrate, and the wiring is the upper glass substrate. And the peripheral end surface of the upper glass substrate includes the forward tapered end surface, and the peripheral end surface of the lower glass substrate is such that the upper surface is more outward than the lower surface. It includes a reverse taper end surface that is inclined so as to face obliquely downward, and the reverse taper end surface may be a rough surface.

  (5) In the liquid crystal display device described in (1), the liquid crystal display device further includes a wiring made of a light reflecting film disposed between the upper glass substrate and the lower glass substrate, and the wiring is the upper glass substrate. And the end surface of the lower glass substrate is formed, and the peripheral end surface of the upper glass substrate is inclined so that the upper surface protrudes outward from the lower surface, and is inclined obliquely downward. The peripheral end surface of the lower glass substrate may include the forward tapered end surface.

  (6) The liquid crystal display device according to the present invention includes a liquid crystal display panel having an upper glass substrate and a lower glass substrate for sandwiching liquid crystal, and a light reflecting film disposed between the upper glass substrate and the lower glass substrate. A backlight that emits light in a planar shape from the lower glass substrate side to the liquid crystal display panel, and each of the upper glass substrate and the lower glass substrate is the backlight. It has an upper surface facing the opposite side, a lower surface facing the backlight, and a peripheral end surface connecting the upper surface and the lower surface, and the wiring is formed avoiding the end portions of the upper glass substrate and the lower glass substrate. The peripheral end surface of the upper glass substrate includes a reverse tapered end surface that is inclined obliquely downward by the upper surface protruding outward from the lower surface, and the peripheral end surface of the lower glass substrate is Above And characterized by connecting at right angles to the lower surface. According to the present invention, the light incident on the lower glass substrate is reflected by the wiring made of the light reflecting film, but is incident on the upper glass substrate at the end where the wiring is not formed. The light incident on the upper glass substrate from the end thereof is light that has propagated through the lower glass substrate, and therefore includes light having an oblique incident angle. This light travels to the end portion of the upper glass substrate, but the upper surface of the upper glass substrate protrudes outward from the lower surface, so that the light is emitted from the upper surface without hitting the reverse tapered end surface. Thereby, it can prevent that the edge part of a glass substrate looks shining, and can prevent the fall of display quality, without increasing thickness.

It is sectional drawing which shows the liquid crystal display device which concerns on embodiment of this invention. It is a perspective view of a liquid crystal display panel. It is a figure which shows the edge part of a liquid crystal display panel. It is a figure which shows the structure and effect | action of the modification 1 of the liquid crystal display device which concerns on embodiment of this invention. It is a figure which shows the structure and effect | action of the modification 2 of the liquid crystal display device which concerns on embodiment of this invention. It is a figure which shows the structure and effect | action of the modification 3 of the liquid crystal display device which concerns on embodiment of this invention. It is a figure which shows the structure and effect | action of the modification 4 of the liquid crystal display device which concerns on embodiment of this invention. It is a figure which shows the structure and effect | action of the modification 5 of the liquid crystal display device which concerns on embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view showing a liquid crystal display device according to an embodiment of the present invention. The liquid crystal display device includes a liquid crystal display panel 10. FIG. 2 is a perspective view of the liquid crystal display panel 10.

  The liquid crystal display panel 10 includes an upper glass substrate 12 and a lower glass substrate 14, and liquid crystal (not shown) is sandwiched between them. The substrate having the display area 16 on which an image is displayed is the upper glass substrate 12. The lower glass substrate 14 is a TFT (Thin Film Transistor) substrate (or array substrate) including thin film transistors, pixel electrodes, wirings, and the like, and the upper glass substrate 12 is a color filter substrate. The driving method of the liquid crystal display panel 10 may be any method such as an IPS (In Plane Switching) method, a TN (Twisted Nematic) method, or a VA (Vertical Alignment) method, and electrodes and wirings corresponding to the method are formed. The

  A flexible wiring substrate 18 is attached to the lower glass substrate 14 for electrical connection with the outside. The flexible wiring board 18 is electrically connected to a connection terminal (not shown) to the outside of the lower glass substrate 14. The upper glass substrate 12 is shifted and disposed so as to avoid a portion where a connection terminal (not shown) of the lower glass substrate 14 is formed. That is, the upper glass substrate 12 is smaller than the lower glass substrate 14. As shown in FIG. 1, polarizing plates 20 are attached to the surfaces of the upper glass substrate 12 and the lower glass substrate 14 that face each other.

  As shown in FIG. 1, the liquid crystal display device has a backlight 22. The backlight 22 emits light in a planar shape toward the lower glass substrate 14 with respect to the liquid crystal display panel 10. FIG. 1 shows a light guide plate 24 that is a part of the backlight 22. The light guide plate 24 converts light of a light emitting diode (not shown) as a point light source into a surface light source and irradiates the liquid crystal display panel 10. The light emitting surface of the backlight 22 is directed toward the polarizing plate 20. An optical sheet 26 is disposed between the liquid crystal display panel 10 and the backlight 22. The optical sheet 26 includes a diffusion sheet and a prism sheet.

  The liquid crystal display device has an inner frame 28. The inner frame 28 is a resin molded product and is also called a mold. The backlight 22 is disposed inside the inner frame 28. Specifically, a recess is formed in the inner frame 28, and the backlight 22 is disposed in the recess. The inner frame 28 is accommodated in an outer frame 30 made of metal. The liquid crystal display panel 10 (for example, the polarizing plate 20) and the inner frame 28 are fixed by a light-shielding double-sided tape 32. Since the light-shielding double-sided tape 32 blocks light, it also has a function of preventing light leakage.

FIG. 3 is a diagram illustrating an end portion of the liquid crystal display panel 10. The upper glass substrate 12 has an upper surface 34u that faces away from the backlight 22, a lower surface 36u that faces the backlight 22, and a peripheral end surface 38u that connects the upper surface 34u and the lower surface 36u. The peripheral end surface 38u of the upper glass substrate 12 includes a forward tapered end surface 40u that inclines so as to face obliquely upward as the lower surface 36u protrudes outward from the upper surface 34u. The forward tapered end face 40u may be flat, convex, or concave as long as it faces obliquely upward. The length L ₁ of the forward tapered end face 40 u in the direction along the surface of the upper glass substrate 12 is the same as the thickness T ₁ of the upper glass substrate 12.

  In the example shown in FIG. 2, the planar shape of the upper glass substrate 12 is rectangular, and forward tapered end faces 40 u are formed on three sides thereof. In this case, on the side of the upper glass substrate 12 on the side where the lower glass substrate 14 protrudes, an end surface 40v that is connected to the front and back surfaces at right angles is formed instead of the forward tapered end surface 40u. Alternatively, as a modification, the entire peripheral end surface 38u of the upper glass substrate 12 may be a forward tapered end surface 40u.

As shown in FIG. 3, the forward tapered end face 40u is a rough surface. The rough surface processing can be performed by sandblasting. The roughness of the rough surface is a roughness at which the maximum height (R _max ) from the lowest valley bottom to the highest peak of the surface irregularities is 20 μm or more and less than 50 μm.

The lower glass substrate 14 has an upper surface 34d facing away from the backlight 22, a lower surface 36d facing the backlight 22, and a peripheral end surface 38d connecting the upper surface 34d and the lower surface 36d. The peripheral end surface 38d of the lower glass substrate 14 includes a forward tapered end surface 40d that is inclined so as to face obliquely upward, with the lower surface 36d protruding outward from the upper surface 34d. The forward tapered end face 40d may be flat, convex, or concave as long as it faces obliquely upward. The length L ₂ of the forward tapered end face 40 d in the direction along the surface of the lower glass substrate 14 is the same as the thickness T ₂ of the lower glass substrate 14.

  In the example shown in FIG. 2, the planar shape of the lower glass substrate 14 is rectangular, and forward tapered end faces 40d are formed on three sides thereof. In this case, the front end surface of the portion of the lower glass substrate 14 that protrudes from the upper glass substrate 12 is not the forward tapered end surface 40d but the end surface 40v that is connected to the front and rear surfaces at a right angle. Alternatively, as a modification, the entire peripheral end surface 38d of the lower glass substrate 14 may be a forward tapered end surface 40d.

The forward tapered end surface 40d is a rough surface. The rough surface processing can be performed by sandblasting. The roughness of the rough surface is a roughness at which the maximum height (R _max ) from the lowest valley bottom to the highest peak of the surface irregularities is 20 μm or more and less than 50 μm.

  According to the present embodiment, as shown in FIG. 3, the light entering from the lower surface 36u and the lower surface 36d can be reflected downward by the forward tapered end surface 40u and the forward tapered end surface 40d. It is possible to prevent the end portion of the substrate 14 from being shining, and to prevent the display quality from being lowered without increasing the thickness. In addition, since the forwardly tapered end surface 40u and the forward tapered end surface 40d are rough surfaces, the light reflected internally is diffused, so that the luminance of the end portion of the lower glass substrate 14 is lowered. Therefore, even if the inclination angles of the forward tapered end surface 40u and the forward tapered end surface 40d are gentle, the luminance of the end portion of the lower glass substrate 14 is lowered.

  FIG. 4 is a diagram illustrating a first modification of the liquid crystal display device according to the embodiment of the present invention. In this example, the peripheral end surface 138u of the upper glass substrate 112 includes a forward tapered end surface 140, but the peripheral end surface 138d of the lower glass substrate 114 is connected to the upper surface 134d and the lower surface 136d at a right angle. Even in this example, light entering from the lower surface 136 u of the upper glass substrate 112 can be reflected downward by the forward tapered end surface 140.

  FIG. 5 is a diagram showing a second modification example of the liquid crystal display device according to the embodiment of the present invention. In this example, the peripheral end surface 238d of the lower glass substrate 214 includes a forward tapered end surface 240, but the peripheral end surface 238u of the upper glass substrate 212 is connected to the upper surface 234u and the lower surface 236u at a right angle. Even in this example, light entering from the lower surface 236d of the lower glass substrate 214 can be reflected downward by the forward tapered end surface 240 thereof.

  FIG. 6 is a diagram showing a third modification of the liquid crystal display device according to the embodiment of the present invention. In this example, a wiring 342 is disposed between the upper glass substrate 312 and the lower glass substrate 314. The wiring 342 is made of a light reflecting film. The wiring 342 is formed so as to avoid the end portions of the upper glass substrate 312 and the lower glass substrate 314. A liquid crystal 344 is interposed between the upper glass substrate 312 and the lower glass substrate 314. Specifically, the wiring 342 is formed on the lower glass substrate 314, and the liquid crystal 344 is interposed between the wiring 342 and the upper glass substrate 312. The liquid crystal 344 is sealed with a sealant 346.

The peripheral end surface 338 u of the upper glass substrate 312 includes a forward tapered end surface 340. Other details of the forward tapered end surface 340 are as described above. On the other hand, the peripheral end surface 338d of the lower glass substrate 314 includes an inversely tapered end surface 348 that is inclined so as to face obliquely downward as the upper surface 334d protrudes outward from the lower surface 336d. The reverse tapered end surface 348 may be flat, convex, or concave as long as it faces obliquely downward. The length L ₃ of the reverse tapered end surface 348 in the direction along the surface of the lower glass substrate 314 is the same as the thickness T ₃ of the lower glass substrate 314.

  The reverse tapered end surface 348 is a rough surface. The reverse tapered end surface 348 corresponds to the content of the forward tapered end surface 340 except that the direction in which it faces is reversed.

  According to this modification, the light incident on the lower glass substrate 314 is reflected by the wiring 342 made of a light reflecting film, but is incident on the upper glass substrate 312 at the end where the wiring 342 is not formed. The light incident on the upper glass substrate 312 from the end thereof is light that has propagated through the lower glass substrate 314. For example, the light is reflected by the reverse tapered end surface 348 of the lower glass substrate 314 and enters the upper glass substrate 312. The light is reflected by the forward tapered end surface 340 of the upper glass substrate 312, but the light travels inside the upper glass substrate 312 without being emitted to the outside due to the inclination of the forward tapered end surface 340. Thereby, it is possible to prevent the end portion of the upper glass substrate 312 from being shining, and to prevent the display quality from deteriorating without increasing the thickness. In addition, since the forward tapered end surface 340 and the reverse tapered end surface 348 are rough surfaces, the light reflected inside can be diffused, so that the inclination angles can be made gentle.

  FIG. 7 is a diagram showing a fourth modification of the liquid crystal display device according to the embodiment of the present invention. In this example, a wiring 442 is disposed between the upper glass substrate 412 and the lower glass substrate 414. The wiring 442 is made of a light reflecting film. The wiring 442 is formed so as to avoid the end portions of the upper glass substrate 412 and the lower glass substrate 414. Further, a liquid crystal 444 is interposed between the upper glass substrate 412 and the lower glass substrate 414. Specifically, the wiring 442 is formed on the lower glass substrate 414, and the liquid crystal 444 is interposed between the wiring 442 and the upper glass substrate 412. The liquid crystal 444 is sealed with a sealant 446.

  A peripheral end surface 438 d of the lower glass substrate 414 includes a forward tapered end surface 440. Other details of the forward tapered end surface 440 are as described above. On the other hand, the peripheral end surface 438u of the upper glass substrate 412 includes an inversely tapered end surface 448 that is inclined so as to face obliquely downward as the upper surface 434u projects outward from the lower surface 436u. Regarding the reverse tapered end surface 448, the contents of the above-described forward tapered end surface 40u (see FIG. 3) may be applied except that the facing direction is opposite.

  According to this modification, the light incident on the lower glass substrate 414 is reflected by the wiring 442 made of a light reflecting film, but enters the upper glass substrate 412 at the end where the wiring 442 is not formed. The light incident on the upper glass substrate 412 from the end thereof is light that has propagated through the lower glass substrate 414, and thus includes light whose incident angle is oblique. This light travels to the end of the upper glass substrate 412, but the upper surface 434 u of the upper glass substrate 412 protrudes outward from the lower surface 436 u, so that the light exits from the upper surface 434 u without hitting the reverse tapered end surface 448. . Thereby, it is possible to prevent the end portion of the upper glass substrate 412 from being shining and to prevent the display quality from being lowered without increasing the thickness. The effect of the forward tapered end surface 440 of the lower glass substrate 414 is as described in the above embodiment.

  FIG. 8 is a diagram showing a fifth modification example of the liquid crystal display device according to the embodiment of the present invention. In this example, a wiring 542 is disposed between the upper glass substrate 512 and the lower glass substrate 514. The wiring 542 is made of a light reflecting film. The wiring 542 is formed avoiding the end portions of the upper glass substrate 512 and the lower glass substrate 514. A liquid crystal 544 is interposed between the upper glass substrate 512 and the lower glass substrate 514. Specifically, the wiring 542 is formed on the lower glass substrate 514, and the liquid crystal 544 is interposed between the wiring 542 and the upper glass substrate 512. The liquid crystal 544 is sealed with a sealant 546.

  The peripheral end surface 538u of the upper glass substrate 512 includes a reverse tapered end surface 548 that is inclined so as to face obliquely downward as the upper surface 534u protrudes outward from the lower surface 536u. Regarding the reverse tapered end surface 548, the contents of the above-described forward tapered end surface 40u (see FIG. 3) may be applied except that the facing direction is reverse. On the other hand, the peripheral end surface 538d of the lower glass substrate 514 is connected to the upper surface 534d and the lower surface 536d at a right angle.

  According to this modification, the light incident on the lower glass substrate 514 is reflected by the wiring 542 made of a light reflecting film, but enters the upper glass substrate 512 at the end where the wiring 542 is not formed. The light incident on the upper glass substrate 512 from the end thereof is light that has propagated through the lower glass substrate 514, and therefore includes light whose incident angle is oblique. This light travels to the end of the upper glass substrate 512, but the upper surface 534u of the upper glass substrate 512 protrudes outward from the lower surface 536u, so that the light exits from the upper surface 534u without hitting the reverse tapered end surface 548. . Thereby, it can prevent that the edge part of the upper glass substrate 512 shines, and can prevent the fall of display quality, without increasing thickness.

  A display device used for a portable device can be miniaturized by arranging a light source along one side of a rectangular display unit. The light source emits light toward the opposite sides. According to the present invention, light leakage can be efficiently prevented by making the side opposite to the side where the LED as the light source is disposed an inclined surface or a rough surface. For example, as shown in FIG. 2, a flexible wiring board 18 is connected to the liquid crystal display panel in order to capture data from the outside. By supplying power to the light source using the flexible wiring board 18, the number of components of the liquid crystal module can be reduced. Moreover, the flexible wiring board 18 can be shortened by arranging the LED as the light source along the side to which the flexible wiring board 18 is connected. In this case, when the present invention is applied to the side opposite to the side to which the flexible wiring board 18 is connected, light leakage can be efficiently prevented.

  The present invention is not limited to the embodiment described above, and various modifications are possible. For example, the configuration described in the embodiment can be replaced with a substantially the same configuration, a configuration that exhibits the same operational effects, or a configuration that can achieve the same purpose.

  10 liquid crystal display panel, 12 upper glass substrate, 14 lower glass substrate, 16 display area, 18 flexible wiring substrate, 20 polarizing plate, 22 backlight, 24 light guide plate, 26 optical sheet, 28 inner frame, 30 outer frame, 32 light shielding Double-sided tape, 34d upper surface, 34u upper surface, 36d lower surface, 36u lower surface, 38d circumferential end surface, 38u circumferential end surface, 40d forward tapered end surface, 40u forward tapered end surface, 40v end surface, 112 upper glass substrate, 134 upper surface, 136 lower surface, 138 circumferential end surface 138u peripheral end surface, 140 forward tapered end surface, 140 forward tapered end surface, 212 upper glass substrate, 214 lower glass substrate, 234d upper surface, 236d lower surface, 236d lower surface, 238d circumferential end surface, 238u circumferential end surface, 240 forward tapered end surface, 312 upper glass Substrate, 314 Lower glass Substrate, 334d upper surface, 336d lower surface, 338d peripheral end surface, 338u peripheral end surface, 340 forward tapered end surface, 342 wiring, 344 liquid crystal, 346 sealing material, 348 reverse tapered end surface, 412 upper glass substrate, 414 lower glass substrate, 434u upper surface, 436u Lower surface, 438d peripheral end surface, 438u peripheral end surface, 440 forward tapered end surface, 442 wiring, 444 liquid crystal, 446 sealing material, 448 reverse tapered end surface, 512 upper glass substrate, 514 lower glass substrate, 534d upper surface, 534u upper surface, 536d lower surface, 536u lower surface, 536u Lower surface, 538d peripheral end surface, 538u peripheral end surface, 542 wiring, 544 liquid crystal, 546 sealing material, 548 reverse taper end surface.

Claims (6)

A liquid crystal display panel having an upper glass substrate and a lower glass substrate for sandwiching the liquid crystal;
A backlight that emits light in a planar shape from the lower glass substrate side to the liquid crystal display panel;
Have
Each of the upper glass substrate and the lower glass substrate has an upper surface facing away from the backlight, a lower surface facing the backlight, and a peripheral end surface connecting the upper surface and the lower surface,
The peripheral end surface of at least one of the upper glass substrate and the lower glass substrate includes a forward tapered end surface that is inclined so as to face obliquely upward with the lower surface protruding outward from the upper surface,
The liquid crystal display device according to claim 1, wherein the forward tapered end surface is a rough surface. The liquid crystal display device according to claim 1,
Each of the peripheral end surfaces of the upper glass substrate and the lower glass substrate includes the forward tapered end surface. The liquid crystal display device according to claim 1,
The peripheral end surface of one of the upper glass substrate and the lower glass substrate includes the forward tapered end surface,
The liquid crystal display device, wherein the other peripheral end surfaces of the upper glass substrate and the lower glass substrate are connected to the upper surface and the lower surface at right angles. The liquid crystal display device according to claim 1,
The wiring further comprises a light reflecting film disposed between the upper glass substrate and the lower glass substrate,
The wiring is formed avoiding the end portions of the upper glass substrate and the lower glass substrate,
The peripheral end surface of the upper glass substrate includes the forward tapered end surface,
The peripheral end surface of the lower glass substrate includes a reverse tapered end surface that is inclined so as to face obliquely downward, with the upper surface protruding outward from the lower surface,
The reverse tapered end surface is a rough surface. The liquid crystal display device according to claim 1,
The wiring further comprises a light reflecting film disposed between the upper glass substrate and the lower glass substrate,
The wiring is formed avoiding the end portions of the upper glass substrate and the lower glass substrate,
The peripheral end surface of the upper glass substrate includes a reverse tapered end surface that is inclined so as to face obliquely downward, with the upper surface protruding outward from the lower surface,
The liquid crystal display device, wherein the peripheral end surface of the lower glass substrate includes the forward tapered end surface. A liquid crystal display panel having an upper glass substrate and a lower glass substrate for sandwiching the liquid crystal;
A wiring made of a light reflecting film disposed between the upper glass substrate and the lower glass substrate;
A backlight that emits light in a planar shape from the lower glass substrate side to the liquid crystal display panel;
Have
Each of the upper glass substrate and the lower glass substrate has an upper surface facing away from the backlight, a lower surface facing the backlight, and a peripheral end surface connecting the upper surface and the lower surface,
The wiring is formed avoiding the end portions of the upper glass substrate and the lower glass substrate,
The peripheral end surface of the upper glass substrate includes a reverse tapered end surface that is inclined so as to face obliquely downward, with the upper surface protruding outward from the lower surface,
The liquid crystal display device, wherein the peripheral end surface of the lower glass substrate is connected to the upper surface and the lower surface at a right angle.

Images