JP4605241B2 - Liquid crystal panel, method of manufacturing the same, and liquid crystal display device - Google Patents

Description

  The present invention relates to a liquid crystal panel, a manufacturing method thereof, and a liquid crystal display device using the liquid crystal panel.

  2. Description of the Related Art In recent years, liquid crystal display devices are mounted on various electronic devices ranging from personal computers, PDA (Personal Digital Assistant), portable information terminals such as mobile phones, to home appliances such as video cameras and digital cameras. In general, the liquid crystal display device is a light receiving display device in which the liquid crystal itself does not emit light, and therefore, a backlight is required as a surface light source for displaying an image brightly and uniformly.

The backlight emits planar light from the back side (non-display surface side) of the liquid crystal panel. The light emitted from the backlight is selectively transmitted through the liquid crystal panel. At this time, the light incident from the non-display surface side of the liquid crystal panel escapes to the opposite display surface side according to the light transmittance of the liquid crystal, whereby an image is displayed on the screen of the liquid crystal panel.

In such a transmissive liquid crystal display device, when the liquid crystal panel is irradiated with light from the backlight, the light is multiple-reflected inside the glass substrate constituting the liquid crystal panel, and unnecessary light generated thereby is generated in the liquid crystal panel. May wrap around the display side. In such a case, when the screen of the liquid crystal panel is viewed obliquely, unnecessary light due to the multiple reflections is observed as light leakage at the outer periphery of the liquid crystal panel, which may cause discomfort and discomfort to the user who sees the screen. is there.

More specifically, first, as shown in FIG. 19, in the liquid crystal panel, two glass substrates 51 and 52 are bonded together with a sealing material 53, and polarizing plates 54 and 55 are attached to the glass substrates 51 and 52, respectively. Is pasted. Among these, on one glass substrate 52, a color filter layer 56 including a black matrix 56K is formed.

As shown in FIG. 20, the liquid crystal panel having the above structure is assembled with the module frames 57 and 58 to assemble the liquid crystal display device. In this state, when light is emitted from a backlight (not shown), the liquid crystal panel is directed toward the outer periphery of the panel. Then, the obliquely incident light (backlight light in the figure) is incident on the end surface of the glass substrate 51 and is irregularly reflected there. At this time, if the frame portion of the module frame 57 covering the display surface side (front surface side) of the liquid crystal panel is formed wide, even if light is reflected (diffusely reflected) on the end surface of the glass substrate 51 as described above, Since this light is shielded by the frame portion of the module frame 57, no light leakage occurs. However, if the frame portion of the module frame 57 is narrowed to meet the demand for reducing the module size, unnecessary light cannot be shielded by the frame portion of the module frame 57 as shown in FIG. Further, even if a shield for shielding light is provided as close as possible to the effective screen, leakage of unnecessary light cannot be reliably prevented due to the influence of multiple scattering of light inside the polarizing plate or the glass substrate. Furthermore, even if it is intended to prevent unnecessary light from leaking by controlling the angle of the end surfaces of the glass substrates 51 and 52, the angle of the glass end surface varies when the glass substrate is divided in the actual manufacturing process. Even if you trace and simulate correctly, the results may not match.

Therefore, as conventional techniques, there are known ones in which a light shielding film is formed on one surface of a counter substrate on which a color filter is formed and those in which a light shielding film is formed on one surface of an array substrate on which TFTs are formed (for example, patents). Reference 1).

JP 2001-281646 A (paragraphs 0008, 0016, FIGS. 1 and 4)

  However, in the above prior art, since the light shielding film is formed so that the boundary of the common electrode formed on the counter substrate is not visible from the outside, the above-described light leakage at the outer peripheral portion of the liquid crystal panel is accurately prevented. It is not possible. Moreover, when manufacturing a liquid crystal panel, it is necessary to provide a new process for forming a light shielding film.

  The liquid crystal panel according to the present invention includes a first substrate disposed on the display surface side and a second substrate disposed on the non-display surface side, and the second substrate has a light-shielding wiring layer. And the wiring layer is formed to extend to the outer edge of the second substrate.

  In this liquid crystal panel, the wiring layer is formed to extend to the outer edge of the second substrate, so that when the liquid crystal panel is irradiated with light from a surface light source, light incident obliquely toward the outer periphery of the panel is emitted. The wiring layer is shielded from light.

  ADVANTAGE OF THE INVENTION According to this invention, when light is irradiated to a liquid crystal panel from a surface light source, the leak of the unnecessary light from a panel outer peripheral part can be prevented reliably. Thereby, since there is no possibility of giving the user a sense of discomfort or discomfort due to light leakage at the outer periphery of the panel, the commercial value of the liquid crystal display device can be increased.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a schematic sectional view showing a configuration example of a liquid crystal display device to which the present invention is applied. The illustrated liquid crystal display device mainly includes a liquid crystal panel 1 and a backlight 2. The backlight 2 serves as a surface light source that emits planar light toward the liquid crystal panel 1, and is disposed on the non-display surface side (back surface side) of the liquid crystal panel 1.

  The liquid crystal panel 1 is configured using two glass substrates 3 and 4. One glass substrate 3 corresponds to the first substrate in the present invention, and is disposed on the display surface side (front surface side) of the liquid crystal panel 1. The other glass substrate 4 corresponds to the second substrate in the present invention, and is disposed on the non-display surface side of the liquid crystal panel 1. In the following description, one glass substrate 3 is referred to as a first glass substrate, and the other glass substrate 4 is referred to as a second glass substrate.

  A first polarizing plate 5 is attached to one surface of the first glass substrate 3. In addition, a color filter layer 6 is formed on the other surface of the first glass substrate 3 (the surface opposite to the bonding surface of the first polarizing plate 5). The color filter layer 6 is formed between three color filters 6R, 6G, and 6B corresponding to R (red), G (green), and B (blue) and these color filters 6R, 6G, and 6B. And the black matrix 6K. Further, a transparent electrode 7 and an alignment layer 8 are formed on the color filter layer 6. Since the first glass substrate 3 has a color filter, it is also called a color filter substrate.

  A transparent electrode 9 is formed on one surface of the second glass substrate 4, and an alignment layer 10 is formed on the transparent electrode 9. A second polarizing plate 11 is attached to the other surface of the second glass substrate 4 (the surface opposite to the surface on which the transparent electrode 9 is formed). Since the second glass substrate 4 has an array of TFTs (thin film transistors), it is also called a TFT array substrate.

  The 1st glass substrate 3 and the 2nd glass substrate 4 are bonded together by the sealing material 12 via the spacer which is not shown in figure in the state which mutually faced the alignment layers 8 and 10. FIG. A liquid crystal 13 is sealed between the first glass substrate 3 and the second glass substrate 4.

  FIG. 2 is a cross-sectional view of the main part showing the configuration of the liquid crystal panel according to the first embodiment of the present invention. In FIG. 2, as a layer structure of the color filter layer 6 formed on the first glass substrate 3, a black matrix 6 </ b> K as a light shielding film having high light shielding properties is extended to the outer edge of the first glass substrate 3. It is formed. The black matrix 6K is continuously formed from the inner side (liquid crystal sealing side) to the outer side of the first glass substrate 3 with the sealing material 12 as a boundary. As long as the black matrix 6K has high light-shielding properties, any of metal (for example, metal chromium), metal oxide (for example, chromium oxide), and resin black matrix may be used. Incidentally, as the resin black matrix (resin BM), a dispersion of carbon or titanium in a photoresist or a dispersion of a pigment in a resist (pigment dispersion resist) can be used.

  When manufacturing the liquid crystal panel having the above configuration, the black matrix 6K is patterned into a predetermined shape in the step of forming the color filter layer 6 on the first glass substrate 3. As a patterning method for the black matrix 6K, a photolithography method can be used. Specifically, for example, chromium as a material of the black matrix 6K is formed on the first glass substrate 3 by sputtering, vapor deposition, or the like, and the resulting chromium film is patterned by exposure and development. At that time, the chromium film is patterned so that the region from the outer edge of the color filters 6R, 6G, 6B to the outer edge of the first glass substrate 3 is covered with the black matrix 6K on the outer periphery of the first glass substrate 3. Thus, the black matrix 6K is formed in a state of extending from the outer edge portion of the color filter to the outer edge portion of the first glass substrate 3. Thereby, the liquid crystal panel having the configuration shown in FIG. 2 can be obtained.

  By thus forming the black matrix 6K of the color filter layer 6 so as to extend to the outer edge of the first glass substrate 3, as shown in FIG. 3, the module frames 14 and 15 are mounted on the liquid crystal panel to display the liquid crystal display. In the assembled state, the light incident on the liquid crystal panel 1 from the backlight 2 obliquely toward the outer periphery of the panel (backlight light in the figure) is shielded by the black matrix 6K. become. Therefore, unnecessary light does not escape to the display surface side of the first glass substrate 3. Thereby, leakage of unnecessary light can be reliably prevented at the outer peripheral portion of the liquid crystal panel. Further, since the unnecessary light is shielded by using the black matrix 6K that is an essential component of the liquid crystal panel, light leakage at the outer periphery of the panel can be prevented without providing a separate manufacturing process for forming a light shielding film. be able to.

  In manufacturing the liquid crystal panel, when the glass substrates 3 and 4 are divided, as shown in FIG. 4A, an extremely fine gap (or groove) 16 is previously formed in the black matrix 6K along the dividing line. By providing this, it is possible to prevent the black matrix 6K from peeling off or missing due to the division. Also, as shown in FIG. 4B, the gap dimension between the substrates is changed by forming the black matrix 6K in a divided state at a position on the first glass substrate 3 where the sealing material 12 is disposed. Can be prevented, and moisture or the like can be prevented from penetrating into the panel through the black matrix 6K.

  FIG. 5 is a cross-sectional view of the main part showing the configuration of the liquid crystal panel according to the second embodiment of the present invention. In FIG. 5, the wiring layer 17 is formed on one surface of the second glass substrate 4, and the wiring layer 17 is formed to extend to the outer edge portion of the second glass substrate 4. The wiring layer 17 is continuously formed from the inner side (liquid crystal sealing side) to the outer side of the first glass substrate 3 with the sealing material 12 as a boundary. The wiring layer 17 is preferably made of molybdenum having excellent environmental resistance, and has an optically high light shielding property (preferably a light shielding property with an optical density (OD) of 3 or more). The wiring layer 17 is formed on the second glass substrate 4 together with a wiring pattern connected to the TFT electrodes and electrode wires. The constituent material of the wiring layer 17 is not limited to molybdenum, but may be a metal film of tantalum, aluminum, chromium, or an alloy thereof, or a laminated film of metals.

  When manufacturing the liquid crystal panel having the above-described configuration, the wiring layer 17 is patterned into a predetermined shape in the step of forming electrodes and wiring on the second glass substrate 4. As a patterning method for the wiring layer 17, the same photolithography method as that for the black matrix 6K can be used. That is, molybdenum as a material for the wiring layer 17 is formed on the second glass substrate 4 by sputtering, vapor deposition, or the like, and the resulting molybdenum film is patterned by exposure and development. In that case, the wiring layer 17 was extended to the outer edge part of the 2nd glass substrate 4 by patterning a molybdenum film | membrane so that the outer peripheral part of the 2nd glass substrate 4 might be covered by the wiring layer 17 to the outer edge part. Form in state. Thereby, the liquid crystal panel having the configuration shown in FIG. 5 can be obtained.

  Thus, by forming the wiring layer 17 on the second glass substrate 4 so as to extend to the outer edge of the second glass substrate 4, the panel outer peripheral portion of the light irradiated from the backlight 2 to the liquid crystal panel 1 is formed. The light incident obliquely toward the surface is shielded by the wiring layer 17. Therefore, unnecessary light does not escape to the display surface side of the first glass substrate 3. Thereby, leakage of unnecessary light can be reliably prevented at the outer peripheral portion of the liquid crystal panel. Further, since unnecessary light is shielded by using the wiring layer 17 which is an essential component of the liquid crystal panel, light leakage at the outer periphery of the panel can be prevented without providing a separate manufacturing process for forming a light shielding film. be able to. Furthermore, by configuring the wiring layer 17 with molybdenum having excellent environmental resistance, corrosion and peeling of the wiring layer 17 due to contact with outside air can be prevented, and a good light shielding effect can be exhibited over a long period of time.

  FIG. 6 is a cross-sectional view of the main part showing the configuration of the liquid crystal panel according to the third embodiment of the present invention. In FIG. 6, a black matrix 6K is formed on the first glass substrate 3 so as to extend to the outer edge portion of the first glass substrate 3, and a wiring layer 17 is formed on the second glass substrate 4 with the second glass. It extends to the outer edge of the substrate 4. That is, the structure of the black matrix 6K employed in the first embodiment and the structure of the wiring layer 17 employed in the second embodiment are applied simultaneously.

  When such a configuration is adopted, for example, when one of the black matrix 6K and the wiring layer 17 is peeled off or missing as a light-shielding film, a glass chip or the like, or there is a great demand for light shielding. Even in severe cases, unnecessary light can be shielded while supplementing the light shielding properties of both the black matrix 6 and the wiring layer 17. Therefore, leakage of unnecessary light can be more reliably prevented at the outer peripheral portion of the liquid crystal panel 1.

  FIG. 7 is a cross-sectional view of the main part showing the configuration of the liquid crystal panel according to the fourth embodiment of the present invention. In FIG. 7, a concave groove formed by the first glass substrate 3 and the second glass substrate 4 outside the sealing material 12 for bonding the first glass substrate 3 and the second glass substrate 4 together. Is filled with a light shielding material 18. The light shielding material 18 is made of, for example, a black colored ink material (dried ink), and has high light shielding properties like the black matrix 6K.

  When manufacturing the liquid crystal panel having the above-described configuration, the first glass substrate 3 and the second glass substrate 4 are bonded together with the sealing material 12, and then the liquid crystal is sealed between the glass substrates 3 and 4 (gap space). After that, ink is applied and filled in, for example, a commercially available pen-shaped groove in the concave groove formed on the outside of the sealing material 12, and the ink is dried. When applying ink, the gap between the first glass substrate 3 and the second glass substrate 4 (groove width of the groove) is as narrow as several μm, but if the viscosity of the ink itself is sufficiently low, If it is a liquid ink, the ink can be easily infiltrated into the groove using the capillary phenomenon. Further, the drying after applying the ink may be natural drying, for example, before the autoclave (high pressure heat treatment) performed after the glass substrate is bonded, the liquid crystal is sealed, and the polarizing plate is bonded. If ink is applied (filled), the drying time can be shortened. Incidentally, the two glass substrates 3 and 4 that serve as the base of the liquid crystal panel are divided into individual pieces before or after the liquid crystal is sealed after they are bonded together.

  Thus, by filling the concave groove outside the sealing material 12 with the light shielding material 18, the light incident on the liquid crystal panel 1 from the backlight 2 obliquely toward the outer periphery of the panel is blocked by the light shielding material. 18 is shielded from light. Therefore, unnecessary light does not escape to the display surface side of the first glass substrate 3. Thereby, leakage of unnecessary light can be reliably prevented at the outer peripheral portion of the liquid crystal panel.

  FIG. 8 is a cross-sectional view of the main part showing the configuration of the liquid crystal panel according to the fifth embodiment of the present invention. In FIG. 8, an antireflection film 19 is formed on each end face of the first glass substrate 3 and the second glass substrate 4. The antireflection film 19 is formed of, for example, a black paint (ink or the like) using carbon, pigment, or the like, and the light absorption at the end surfaces of the glass substrates 3 and 4 due to the high light absorption of the film itself. Prevent reflection.

  When manufacturing the liquid crystal panel having the above-described configuration, the first glass substrate 3 and the second glass substrate 4 are bonded together with the sealing material 12, and then the liquid crystal is sealed between the glass substrates 3 and 4 (gap space). After that, the antireflection film 19 is formed by applying black paint or the like to the end faces of the glass substrates 3 and 4.

  By forming the antireflection film 19 on each end face of the glass substrates 3 and 4 in this manner, as shown in FIG. 9, the light emitted from the backlight 2 to the liquid crystal panel 1 is directed toward the outer periphery of the panel. The obliquely incident light (backlight light) is absorbed by the antireflection film 19 at the end surfaces of the glass substrates 3 and 4 and is not reflected on the display surface side. Therefore, unnecessary light does not escape to the display surface side of the first glass substrate 3. Thereby, leakage of unnecessary light can be reliably prevented at the outer peripheral portion of the liquid crystal panel.

  FIG. 10 is a cross-sectional view of the main part showing the configuration of the liquid crystal panel according to the sixth embodiment of the present invention. In FIG. 10, a light shielding film 20 is formed on one surface of the first glass substrate 3 (the surface on which the first polarizing plate 5 is attached). The light shielding film 20 is formed in a region extending from the outer edge of the first polarizing plate 5 to the outer edge of the first glass substrate 3 on the outer periphery of the first glass substrate 3.

  When manufacturing the liquid crystal panel having the above-described configuration, the first glass substrate 3 and the second glass substrate 4 are bonded together with the sealing material 12, and then the liquid crystal is sealed between the glass substrates 3 and 4 (gap space). Then, in a state where the polarizing plates 5 and 11 are attached to the respective glass substrates 3 and 4, one surface (first surface) of the first glass substrate 3 is obtained by a technique such as a printing method, a coating method, or a film attaching method. The light shielding film 20 is formed in a region from the outer edge of the first polarizing plate 5 to the outer edge of the first glass substrate 3.

  By forming the light-shielding film 20 on one surface of the first glass substrate 3 in this way, as shown in FIG. 11, the light emitted from the backlight 2 to the liquid crystal panel 1 is inclined toward the outer periphery of the panel. Light (backlight light) incident on the first glass substrate 3 is shielded by the light shielding film 20 on one surface of the first glass substrate 3. Therefore, unnecessary light does not escape to the display surface side of the first glass substrate 3. Thereby, leakage of unnecessary light can be reliably prevented at the outer peripheral portion of the liquid crystal panel.

  Further, as a modification of the liquid crystal panel according to the sixth embodiment, as shown in FIG. 12, a configuration in which one surface of the first glass substrate 3 to the end surface of the first polarizing plate 5 is covered with a light shielding film 20 is adopted. It is also possible to do. Moreover, the light shielding film 20 can be easily formed by applying a light shielding material or attaching a light shielding film using the end face of the first polarizing plate 5 as a guide. Furthermore, by using the end face of the first polarizing plate 5 as a guide and applying ink or the like with a pen-type applicator, the surface of the first glass substrate 3 and the end face of the first polarizing plate 5 are simultaneously applied. The light shielding film 20 can be formed.

  FIG. 13 is a cross-sectional view of the main part showing the configuration of the liquid crystal panel according to the seventh embodiment of the present invention. In FIG. 13, a light shielding film 21 is formed on the other surface of the second glass substrate 4 (the surface on which the second polarizing plate 11 is attached). The light shielding film 21 is formed in a region from the outer edge of the second polarizing plate 11 to the outer edge of the second glass substrate 4 on the outer periphery of the second glass substrate 4.

  When manufacturing the liquid crystal panel having the above-described configuration, the first glass substrate 3 and the second glass substrate 4 are bonded together with the sealing material 12, and then the liquid crystal is sealed between the glass substrates 3 and 4 (gap space). Then, with the polarizing plates 5 and 11 attached to the respective glass substrates 3 and 4, the other surface of the second glass substrate 4 (first The light-shielding film 21 is formed in a region from the outer edge portion of the second polarizing plate 11 to the outer edge portion of the second glass substrate 4.

  By forming the light-shielding film 21 on the other surface of the second glass substrate 4 in this way, as shown in FIG. 14, the light emitted from the backlight 2 to the liquid crystal panel 1 is directed toward the outer periphery of the panel. Light that is about to enter obliquely (backlight) is shielded by the light shielding film 21 on the other surface of the second glass substrate 4. Therefore, unnecessary light does not escape to the display surface side of the first glass substrate 3. Thereby, leakage of unnecessary light can be reliably prevented at the outer peripheral portion of the liquid crystal panel.

  Further, as a modification of the liquid crystal panel according to the seventh embodiment, as shown in FIG. 15, a configuration in which one surface of the second glass substrate 4 to the end surface of the second polarizing plate 11 is covered with a light shielding film 21 is adopted. It is also possible to do. Moreover, the light shielding film 21 can be easily formed by applying a light shielding material or attaching a light shielding film using the end face of the second polarizing plate 11 as a guide. Furthermore, by using the end face of the second polarizing plate 11 as a guide and applying ink or the like with a pen-type applicator, the surface of the second glass substrate 4 and the end face of the second polarizing plate 11 are simultaneously applied. The light shielding film 21 can be formed.

  Further, as shown in FIG. 16, the light shielding film 21 can be formed on the second glass substrate 4 by applying a light shielding material by an ink jet method in which ink is sprayed from the ink jet nozzles 22. In this case, the ink-jet nozzle 22 may be held by hand and the light-shielding material may be sprayed to the target position. For example, the ink-jet nozzle 22 and the liquid crystal panel are mechanically positioned and held, and in this state, the ink-jet nozzle If the liquid crystal panel 22 or the liquid crystal panel is mechanically moved, the application position and application concentration of the light shielding material on the second glass substrate 4 can be easily controlled. In addition, since there is a certain margin from the effective screen end of the liquid crystal panel to the outer edge of the second polarizing plate 11, the inner side of the second polarizing plate 11 can be applied by applying a light shielding material (or attaching a light shielding film). Even if the light shielding film part slightly protrudes, there is no influence on the screen. Therefore, the degree of freedom of the process is high. The application method using the ink jet is also applicable to the case where the light shielding film 20 is formed on the first glass substrate 3.

  Further, when the glass substrates 3 and 4 are divided in the manufacturing process of the liquid crystal panel, a chipped edge portion of each glass substrate 3 or 4 may be generated. In such a case, light may be irregularly reflected at the chipped portions of the glass substrates 3 and 4, which may cause light leakage at the outer periphery of the panel. Therefore, when a chipped edge portion of the glass substrates 3 and 4 is chipped, as shown in FIG. 17, the chipped portions of the glass substrates 3 and 4 are filled with a light shielding material 23 made of black ink or the like for repair. It is desirable to do.

  In this way, by filling the chipped portions of the glass substrates 3 and 4 with the light shielding material 23, for example, the black matrix 6k is formed to extend to the outer edge of the first glass substrate 3 as in the first embodiment. In addition, when the wiring layer 17 is formed to extend to the outer edge of the second glass substrate 4 as in the second embodiment, or on each end face of the glass substrates 3 and 4 as in the fifth embodiment, antireflection is performed. When the film 19 is formed, light leakage due to chipping of the glass substrates 3 and 4 can be reliably prevented.

  Moreover, the light shielding film for preventing the leakage of unnecessary light is not necessarily formed over the entire periphery of the panel on the first glass substrate 3 or the second glass substrate 4, and the leakage of unnecessary light was confirmed. You may form only in a part. For example, in the case of the liquid crystal panel shown in FIG. 18, on the side opposite to the side to which the flexible printed circuit board 24 is connected, and at the place P1 where nails (not shown) for fixing the module frames 14 and 15 are arranged. Since unnecessary light leaks easily at P2, a sufficient effect can be obtained only by forming the light shielding film 25 at that portion. When comparing the long side (upper and lower sides) and the short side (left and right sides) of the liquid crystal panel, the width of the frame portion of the module frame is narrower at the short side than at the long side. Therefore, light leakage is more likely to occur, and a sufficient effect can be obtained even if the configuration of the present invention is applied only to the short side portion.

It is a schematic sectional drawing which shows the structural example of the liquid crystal display device with which this invention is applied. It is principal part sectional drawing which shows the structure of the liquid crystal panel which concerns on 1st Embodiment of this invention. It is a figure which shows the example of an operation state of the liquid crystal panel which concerns on 1st Embodiment of this invention. It is a manufacturing process figure of the liquid crystal panel concerning a 1st embodiment of the present invention. It is principal part sectional drawing which shows the structure of the liquid crystal panel which concerns on 2nd Embodiment of this invention. It is principal part sectional drawing which shows the structure of the liquid crystal panel which concerns on 3rd Embodiment of this invention. It is principal part sectional drawing which shows the structure of the liquid crystal panel which concerns on 4th Embodiment of this invention. It is principal part sectional drawing which shows the structure of the liquid crystal panel which concerns on 5th Embodiment of this invention. It is a figure which shows the operation state example of the liquid crystal panel which concerns on 5th Embodiment of this invention. It is principal part sectional drawing which shows the structure of the liquid crystal panel which concerns on 6th Embodiment of this invention. It is a figure which shows the example of an operation state of the liquid crystal panel which concerns on 6th Embodiment of this invention. It is principal part sectional drawing which shows the modification of the liquid crystal panel which concerns on 6th Embodiment of this invention. It is principal part sectional drawing which shows the structure of the liquid crystal panel which concerns on 7th Embodiment of this invention. It is a figure which shows the operation state example of the liquid crystal panel which concerns on 7th Embodiment of this invention. It is a figure which shows the modification of the liquid crystal panel which concerns on 7th Embodiment of this invention. It is a figure which shows an example of the coating method of the light shielding material with respect to a glass substrate. It is a figure which shows the state which filled the chip | tip part of the glass substrate with the light shielding material. It is a top view of a liquid crystal panel. It is principal part sectional drawing which shows the basic composition of a liquid crystal panel. It is a figure which shows the example of light shielding by the frame part of a module frame. It is a principle explanatory view of light leakage.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Liquid crystal panel, 2 ... Back light, 3 ... Glass substrate (1st glass substrate), 4 ... Glass substrate (2nd glass substrate), 5 ... 1st polarizing plate, 6 ... Color filter layer, 6R, 6G, 6B ... Color filter, 6K ... Black matrix, 11 ... Second polarizing plate, 12 ... Sealing material, 13 ... Liquid crystal, 17 ... Wiring layer, 18, 23 ... Shading material, 19 ... Antireflection film, 20, 21 ... Light shielding film

Claims (4)

A first substrate disposed on the display surface side;
A second substrate disposed on the non-display surface side,
The outer edge portion of the substrate is provided with a light shielding mechanism that shields light incident obliquely toward the outer edge portion from a surface light source that emits planar light,
The first substrate includes a color filter layer, and a light shielding film of the color filter layer is formed to extend to an outer edge portion of the first substrate. The second substrate is a wiring having a light shielding property. provided with a layer, the wiring layer Ri greens formed by extending to an outer edge portion of the second substrate, and wherein the first substrate and the second substrate have been bonded with a sealant, its bonding The shading mechanism is configured at the outer edge by filling the chipped portion of the outer edge with a light shielding material.
Liquid crystal panel. The light shielding mechanism is configured at a location where a claw for fixing the module frame at the outer edge portion is arranged, and the light shielding mechanism is arranged at a location other than a location where the claw for fixing the module frame at the outer edge portion is arranged. Not configured, or
Of the short side portion and the long side portion of the outer edge portion, the short side portion has the light shielding mechanism, and the long side portion has no light shielding mechanism.
The liquid crystal panel according to claim 1. A first substrate disposed on the display surface side, provided with a second substrate that will be placed on the non-display surface side, the outer edge portion from the surface light source for irradiating a planar light to the outer edge of the substrate In manufacturing a liquid crystal panel having a light blocking mechanism that blocks light incident obliquely toward the
When forming the color filter layer on the first substrate, the light shielding film of the color filter layer is formed in a state extending to the outer edge of the first substrate,
When forming the wiring layer on the second substrate, the wiring layer is formed in a state extending to the outer edge of the second substrate ,
Affixing the first substrate and the second substrate with a sealing material and filling a shading material in the chipped portion of the bonded outer edge,
By these, the said light shielding mechanism is comprised in the said outer edge part.
Method of manufacturing a liquid crystal panel. It is configured using a liquid crystal panel and a surface light source that irradiates the liquid crystal panel with planar light,
The liquid crystal panel is
A first substrate disposed on the display surface side;
A second substrate disposed on the non-display surface side,
The first substrate has a color filter layer and is formed by extending a light shielding film of the color filter layer to an outer edge portion of the first substrate,
The second substrate includes a wiring layer having a light shielding property, and is formed by extending the wiring layer to an outer edge portion of the second substrate ,
The first substrate and the second substrate are bonded together with a sealing material, and a light shielding material is filled in a chipped portion of the bonded outer edge portion.
Liquid crystal display device.

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