JP2005266206A - Liquid crystal display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transflective color liquid crystal display device in which coloring due to light interference is not caused in whatever lighting surroundings, indoor or outdoor, and which carries out a bright and high contrast image display. <P>SOLUTION: The color liquid crystal display device is constructed by dispersing and disposing minute reflection bodies 17 with light scattering and reflecting functions under a transflective transparent pixel electrodes 16, wherein shapes of the reflection bodies 17 seen from the upper side are nearly circular, polygonal, rod shaped, string shaped or similar to these shapes, an arrangement pattern of the reflection bodies 17 is made to be a phase separation pattern manifested in a polymer block copolymerization or the like, the reflection bodies 17 are made to be reflective display parts and the other regions are made to be transmissive display parts. Thereby an area ratio of the reflective display part to the transmissive display part in one pixel is controlled highly accurately and arbitrarily. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a liquid crystal display device, and more particularly to a liquid crystal display device having a function of simultaneously displaying a transmissive display and a reflective display.

  As a color liquid crystal display device having a function of displaying a conventional transmissive display and reflective display and at the same time, as shown in Patent Document 1, concave portions of the concavo-convex shape in the reflective plate having an uneven shape on the surface utilizing the Fibonacci sequence Thus, there has been proposed a reflector plate that is arranged so that regularity does not appear in the concavo-convex shape and a liquid crystal display device including the reflector in a liquid crystal element.

  Further, as shown in Non-Patent Document 1 below, a reflection film is formed only on the optimum inclined surface of the uneven portion formed on the thin film transistor (hereinafter referred to as “TFT”), and the other is used as a transmission portion. Color liquid crystal with a function to display transmissive display and reflective display at the same time, enabling high whiteness display during reflective display by improving the utilization efficiency and applying Fibonacci sequence to the uneven design of the reflector Display devices have been proposed.

Furthermore, as a conventional color liquid crystal display device having a function of simultaneously displaying transmissive display and reflective display, as shown in Patent Document 2 below, a conductive underlayer film formed by laminating granular materials, the liquid crystal display device having a display electrode consisting of an upper layer of metal formed on the lower film has been proposed.
Japanese Patent Laid-Open No. 2002-14211 JP 2000-284305 A News release of Matsushita Electric Industrial Co., Ltd. (2002.3.12)

  In the background art, a reflective film is formed only on the optimum inclined surface of the uneven portion formed of resin or the like on the TFT, and the other is used as a transmissive portion. Is a color liquid crystal display device having a function of simultaneously displaying.

  However, since the background art forms a reflective film only on the optimum inclined surface of the concavo-convex part, it simply increases the cost by increasing the number of photomasks and patterning processes for forming the reflective film only in this specific region. However, there is a problem that the aperture ratio and reflection characteristics of the transmissive portion change depending on the alignment accuracy of the photomask and the uneven pattern.

  In the background art, since the reflective film is disposed only on the optimum inclined surface (specific region) of the uneven portion, the reflective film cannot be used as a pixel electrode, and a separate transparent conductive layer is required. As a result, the structure and the manufacturing process become complicated, which has a problem of increasing the cost.

  An object of the present invention is to solve the above-described problems and provide a liquid crystal display device capable of good transmission and reflection display and a manufacturing method thereof.

  The present invention includes a plurality of pixels surrounded by a plurality of gate wirings on a substrate and a plurality of source wirings arranged so as to be orthogonal to the gate wirings, and the gate wirings and the source wirings are included in the pixels. a switching element provided in the vicinity of the intersection, is connected to the pixel electrodes formed on the switching element, in the transmissive display and the reflective display in the liquid crystal display device are simultaneously performed, a fine having a reflection function and a plurality of light scattering function A reflector made of a conductor is dispersedly arranged below the pixel electrode, and a total area of a region where the reflector serving as a transmissive display portion is not disposed, and a region where the reflector serving as a reflective display portion is disposed. The liquid crystal display device is characterized in that the reflector is arranged so that the ratio of the total area of the liquid crystal panel becomes a predetermined ratio.

  In particular, by forming a pixel structure in which minute reflectors having a plurality of light scattering functions and reflection functions are dispersedly arranged on the entire surface of a region corresponding to a pixel electrode region or a specific region under a transparent pixel electrode, the pixel Not only does the electrode act as a protective film for the reflector, but also a thickness for changing the thickness of the liquid crystal layer between the transmissive display portion and the reflective display portion by interposing an insulating layer between the pixel electrode and the reflector. Since the control layer can be formed, it is possible to provide a liquid crystal display device that has high reliability and can achieve both reflective display and transmissive display characteristics.

  In addition, since a plurality of minute reflectors serving as a reflective display portion are formed under a transparent conductive layer serving as a pixel electrode, an insulating layer is interposed between the reflector and the pixel electrode, whereby a transmissive display portion and In addition to the easy formation of the thickness control layer for changing the thickness of the liquid crystal in the reflective display portion, an ink jet method or a printing method that can easily control the shape and size of the reflector can be used.

  Furthermore, the number of manufacturing steps can be greatly reduced by employing the simplest pixel electrode structure for both transmission and reflection, which includes only a transparent pixel electrode and a minute reflector having a light scattering function and a light reflection function.

  In addition, a transmissive display portion (a portion where no reflector is disposed) is obtained by forming the reflector serving as a reflective display portion into a convex or concave shape of a predetermined size and adopting a pixel electrode structure that is dispersedly arranged below the pixel electrode. And the area ratio of the reflective display part (part where the reflector is disposed) can be arbitrarily controlled with high accuracy.

  Furthermore, by making the shape of the reflector formed under the pixel electrode a convex or concave shape having a continuously changing inclined surface, reflection and transmission display independent of the observation angle can be obtained.

  Also, fine convex or concave reflector is formed under the pixel electrode, shape viewed from above is circular, elliptical, rod-like, cord-like, or by a shape approximating that bright reflection・ Transparent display can be obtained.

  Further, a minute convex or concave reflector formed under the pixel electrode is a polymer having a convex or concave shape with a circular shape, an elliptical shape, a rod shape, a string shape, or a shape similar to the circular shape when viewed from above. Bright reflection / transmission display without coloring can be obtained by using a phase separation pattern expressed by a block copolymer or the like.

  Furthermore, a reflector having a light scattering function and a light reflection function formed under the pixel electrode is made of fine metal particles such as silver, silver / palladium / copper alloy, aluminum, titanium, and gold having a diameter of 1 to 10 nm. By using a paste material having a low viscosity (about 1 to 20 cps) made of resin, solvent, etc., it can be formed at a low temperature (about 200 to 250 ° C.).

  The arrangement pattern of the reflector is a phase separation pattern expressed by polymer block copolymerization or the like, or a pattern close thereto. Note that the present invention is not limited to a pattern using a phase separation phenomenon expressed in a polymer block copolymer or the like, or a pattern similar to them, and uses a conventional Fibonacci number sequence or a random number table. the reflector having a scattering function and a light reflection function may be disposed.

  Further, the present invention is also limited to the shape of the reflector viewed from above, such as a circle, an ellipse, a rod shape having a relatively small aspect ratio, a string shape having a relatively large aspect ratio, or a shape approximate to them. It may be a polygon or the like.

  Furthermore, the present invention is not limited to silver, silver / palladium / copper alloy, aluminum, titanium, gold, etc. as a reflector having a light scattering function and a light reflection function, and can be reflected by other metals or non-metallic materials. It can be a high rate substance.

  According to the present invention, (1) a process of forming and patterning a reflective layer by forming a pixel electrode for both transmissive and reflective display by using only a transparent pixel electrode and a reflector having a light scattering function and a light reflecting function. In addition to eliminating the need for a transparent display area, the ratio of the transmissive display area to the reflective display area can be set with high accuracy in accordance with the lighting environment, and the arrangement pattern can be arbitrarily selected. Since a pixel electrode that is also used for reflection display can be formed, a low-cost liquid crystal display device capable of displaying an image with high brightness and high contrast in both indoor and outdoor lighting environments can be provided.

  (2) Under the transparent pixel electrode, by using a paste mainly composed of minute metal particles having a light reflecting function, by disposing and arranging minute reflectors having a light scattering function and a light reflecting function, Since a liquid crystal display device that can be used for both transmission and reflection display can be obtained by a simple process, a bright and high-contrast image display is possible in both indoor and outdoor lighting environments, and a low-cost liquid crystal display device can be provided.

  (3) By arranging and forming the light reflector as the reflective display portion randomly and using a paste material having a low viscosity and a low firing temperature mainly composed of fine metal particles having a light reflecting function, In any outdoor lighting environment, a bright and high-contrast image display without coloration due to light interference is possible, and a low-cost liquid crystal display device can be provided.

  (4) Under a transparent pixel electrode, it has a curved surface that changes continuously using a paste material having a low viscosity and a low curing temperature using a fine metal particle having a light reflecting function and a thermosetting resin as a binder. by fine convex or concave reflector a randomly distributed and formed, indoors, outdoors with no coloring due to interference of light in any under the environment of illumination, bright, and capable of image display of high contrast, A low-cost liquid crystal display device can be provided.

  (5) Under a transparent pixel electrode, it has a curved surface that continuously changes using a conductive material having a low viscosity and a low curing temperature using a fine metal particle having a light reflection function and a thermosetting resin as a binder. Reflective characteristics suitable for the lighting environment to be used can be obtained by making the shape of the minute convex or concave viewed from above approximately circular, polygonal, elliptical, bar-like, string-like, or a shape similar to them. Therefore, it is possible to provide a low-cost liquid crystal display device capable of displaying a bright and high-contrast image without coloring due to light interference in both indoor and outdoor lighting environments.

  (6) A substantially circular, polygonal, elliptical, rod-like, string-like or convex or concave reflector having a shape similar to them is arranged using a phase separation pattern expressed by a polymer block copolymer or the like. By doing so, it is possible to achieve reflection characteristics suitable for the lighting environment to be used, so that it is possible to display a bright and high-contrast image without coloring due to light interference in both indoor and outdoor lighting environments. A low-cost liquid crystal display device can be provided.

  (7) For high-accuracy tone exposure produced by using paste material with low viscosity and low curing temperature using fine metal particles having a light reflection function and thermosetting resin as a binder and simulation data of phase separation phenomenon analysis by using a photomask, circular generally, polygonal, elliptical, rod-like, cord-like, or the reflection of the shape similar to them can be randomly distributed, no coloring due to interference of light, a bright, and high-contrast image display capable of low-cost liquid crystal display device can be provided.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 to 5 show a liquid crystal display device incorporating a transmission / reflection display electrode according to the present invention, in which convex reflectors 17 having a reflection function are arranged at a desired density.

  FIG. 1 is a cross-sectional structure of a liquid crystal display device according to the present invention. In FIG. 1A, a reflector 17 is disposed under a pixel electrode 16 made of a transparent conductive layer, and FIG. The other points are the same except that the reflector 17 is disposed under the gate insulating film 12 of the thin film transistor 19.

  A plurality of thin film transistors 19 are formed on the glass substrate 10 by a general-purpose vacuum evaporation method and a photolithography method. The thin film transistor 19 includes a gate electrode 11, a gate insulating film 12, an amorphous silicon layer 13 doped with n-type impurities and phosphorus, a drain electrode 14 and a source electrode 15, and has the following materials and thicknesses.

The material of the gate electrode 11: Chromium, thickness: 50 to 600 nm, preferably 100 to 300 nm.
The material of the gate insulating film 12, silicon nitride, thickness: 100 to 1000 nm, preferably 200 to 500 nm.
Material of the amorphous silicon layer 13: amorphous silicon, film thickness: 5 to 100 nm, preferably 10 to 50 nm.
The material of the drain electrode 14: chrome, thickness: 50 to 600 nm, preferably 100 to 300 nm.
The material of the source electrode 15: chrome, thickness: 50 to 600 nm, preferably 100 to 300 nm.

  Next, before the pixel electrode 16 is formed, the reflective material 17 mainly composed of silver particles is applied to the entire region under the pixel electrode 16 or a specific region as shown in FIG. , Using a convex shape (shape: circle (diameter: 3-15 μm, height (or depth): 0.2-1 μm, ratio of diameter to height (depth): 12-18), polygon, rod-like, cord-like or, arranged close to that shape) to it, and baked to form a reflector 17 having the light scattering function and a light reflecting function. The reflecting material 17 is composed of the following.

Material: Silver, silver / palladium / copper alloy, metal such as aluminum, titanium and gold, metal particle diameter: 1 to 20 nm, preferably 2 to 10 nm.
Binder: Thermosetting resin.
Solvent: Nonpolar solvents such as tetradecane and dodecane.
Viscosity: 1-50 cps, preferably 2-10 cps.
Surface tension: 1-60 dyn / cm, preferably 5-30 dyn / cm.
Curing temperature: 150-300 ° C, preferably 200-250 ° C.
Resistivity: 1~50μΩ · cm (thickness: 01~10μm), preferably 5~30μΩ · cm.
In configured, for example, Harima Kasei silver nano paste, Model: NPS-J, and the like.

  Thereafter, the transparent pixel electrode 16 so as to be electrically connected to the thin film transistor 19 after (material:: ITO (Indium Tin Oxide), thickness 50 to 600 nm, preferably of 100 to 300 nm) was formed, and further, the pixel electrode 16 One electrode substrate is prepared by forming an orientation control film 18 (material: polyimide resin, coating method: spin coat, film thickness: 50 to 600 nm, preferably 100 to 300 nm) on top.

  Next, the other electrode substrate on which the light shielding layer 21, the colored layer 22, the protective layer 23, the transparent electrode 24, and the orientation control film 25 are formed on the glass substrate 20 by a general-purpose vacuum evaporation method and a photolithography method. . These materials and film thicknesses are shown below.

The material of the light shielding layer 21: chromium and chromium oxide, film forming method: sputtering, film thickness: 50 to 600 nm, preferably 100 to 300 nm.
Base material of the colored layer 22: acrylic resin, dispersion material: pigment, coating method: spin coating, film thickness: 500 to 3000 nm, preferably 1000 to 2000 nm.
The material of the protective layer 23: acrylic resin, coating method: spin coating, film thickness: 500 to 4000 nm, preferably 1000 to 3000 nm.
The material of the transparent electrode 24: ITO (Indium Tin Oxide), film thickness: 50 to 600 nm, preferably 100 to 300 nm.
Material of the orientation control film 25: polyimide resin, coating method: spin coating, film thickness: 50 to 600 nm, preferably 100 to 300 nm.

  Spacer material 2 (material: polymer beads, silica beads, particle diameter: 5 μm, dispersion method: water dispersion) so that the orientation control film 25 of the other electrode substrate and the orientation control film 18 of the one electrode substrate face each other. The periphery of both electrode substrates 10 and 20 is bonded with a sealing material (not shown, material: epoxy resin, dispersion material: spacer particles), and liquid crystal 1 is filled in the gap between both electrode substrates 10 and 20 Then, a liquid crystal element is formed, and a desired phase difference plate 3, 5 and polarizing plate 4, 6 are bonded to both glass substrate surfaces of the liquid crystal element, and a tape carrier package on which a liquid crystal driving IC is mounted (Hereinafter referred to as “TCP”) and an external circuit for driving or the like are connected to form a liquid crystal display element 30, and a light source 41 (cold cathode tube, LED) and light guide 42 (material: acrylic) are formed on the liquid crystal display element 30. ), Prism sheet 43, diffusion sheet 44, etc. A liquid crystal display device 50 is manufactured by incorporating the backlight 40 into a housing made of a frame, a case, and the like.

  As described above, according to the present invention, since the minute projections or depressions made of the reflecting material having the light scattering and light reflecting functions are arranged under the pixel electrode made of the transparent conductive layer, the pixel electrode and the reflecting material are electrically connected. Since transmission and reflection display are possible even if they are not connected, an insulator such as a metal oxide can be used as a reflecting material, so that an inexpensive and highly reliable liquid crystal display device can be provided.

  In addition, according to the present invention, since a structure in which an insulating layer is disposed between a transparent pixel electrode and a reflective material having a light scattering and light reflecting function as a reflective display body can be formed, the liquid crystal thickness of the transmissive display unit and the reflective display unit Therefore, a liquid crystal display device capable of displaying images with high contrast in both transmissive and reflective displays can be provided.

  Next, the details of the pixel electrode 16 which is a feature of the present invention shown in FIG. As shown in the figure, the light scattering function and the light reflection function are provided under the transparent pixel electrode 16 connected to the source electrode of the thin film transistor 19 formed in the region surrounded by the gate wiring 11 ′ and the drain wiring 14 ′. a pixel electrode disposed a reflector 17 having, a display portion in black is a reflective display part, the display portion other white a transmissive display unit.

  The dispersion arrangement pattern of the reflectors 17 shown in the figure uses a phase separation pattern expressed in a polymer block copolymer or the like, but the present invention is limited to this shape and pattern. without those the shape circular, polygonal, rod, cord-like, or may be a shape similar thereto, distributed pattern of the reflector 17 is to use the random number table may be one that utilizes a Fibonacci sequence. However, for the dispersed arrangement pattern of the reflectors 17, it is desirable to use a method that can arbitrarily control the occupancy ratio of the area of the reflective display portion (the total area of the portion displayed in black) with respect to the area of one pixel. utilizing phase separation patterns expressed in the block copolymer and the like.

  Next, examples of the arrangement of the reflecting material bodies having the light scattering function and the reflection function, which are the features of the present invention, are shown in FIGS. FIG. 3 shows a case where the reflectors 17 are dispersedly arranged on the entire surface of the pixel electrode 16. FIG. 3A shows a dispersion arrangement pattern in which priority is given to transmissive display (the portion displayed in white is the transmissive display portion). b) is an example of a distributed arrangement pattern in which priority is given to reflective display (the portion displayed in black is the reflective display portion). As shown in the figure, a substantially circular convex or concave reflector 17 is distributed over the entire surface under the transparent pixel electrode 16, and (a) shows the display portion of the reflector 17 (displayed in black). There are more transmissive display parts 17 ′ (parts displayed in white) than the part), so-called distributed display dominant pattern example of transmissive display, (b) is more than transmissive display parts 17 ′ (parts displayed in white) This is a so-called dispersed display-dominated distributed arrangement pattern that is more numerous than the reflective display portion 17 (the portion displayed in black).

  FIG. 4 shows a case where the convex or concave reflectors 17 are distributed only in specific areas of the pixel electrode 16, and FIG. 4 (a) shows that the transmissive display portion is divided into strips and is arranged around the periphery. FIG. 4B shows a pattern in which the transmissive display portion is divided and arranged in a circle and the reflector is distributed only in the periphery, and FIG. 5C shows the pattern in FIG. A cross-sectional view taken along the line AA ′, FIG. 6D is a cross-sectional view taken along the line AA ′ in FIG.

  As shown in FIG. 4, FIGS. 4A and 4C show an example in which strip-like transmissive display portions 17 ′ are provided at three locations in the transparent pixel electrode 16 and the reflectors 17 are dispersedly arranged only in the periphery thereof. The pattern arrangement in the case where a large area is allocated to the transmissive display portion 17 ′ (portion displayed in white) and the area of the display portion (portion displayed in black) of the reflector 17 is allocated small is a so-called transmissive display. The important pattern arrangements, FIGS. 5B and 5D, are provided with a circular transmissive display portion 17 ′ having a relatively large area under the transparent pixel electrode 16, and the reflectors 17 are dispersedly arranged in other portions. An example is a pattern arrangement in which a transmissive display portion 17 ′ (portion displayed in white) is provided at a plurality of locations and the area of the display portion (portion displayed in black) of the reflector 17 is slightly reduced. This is a display-oriented pattern arrangement. In the present embodiment, the reflector 17 is not disposed in the relatively large transmissive display portion 17 ′. However, the present invention is not limited to this, and the same effect can be obtained even if the reflector 17 is disposed.

  Further, FIG. 5 is a diagram showing another shape of the reflector 17, and FIG. 5A shows a case where the shape when the reflector 17 is viewed from above is a string pattern. FIG. shape when viewed reflector 17 from above is the case of the bar-like pattern. As shown in FIG. 5, FIG. 5A is a pattern in which string-like (convex or concave) reflectors 17 are arranged in a distributed manner, and the transmissive display portion 17 ′ (the portion displayed in white) and the reflector 17 are arranged. The pattern arrangement when the display portion (the portion displayed in black) has the substantially same area, FIG. 5B is a pattern in which rod-like (convex or concave) reflectors 17 are dispersedly arranged, and the transmissive display portion 17 ′. (Pattern displayed in white) and the display portion of the reflector 17 (portion displayed in black) are approximately the same area. A characteristic of the arrangement pattern of the string or bar-shaped reflector 17 is that directivity (azimuth azimuth) can be imparted to the reflective display characteristics of the liquid crystal display device. In the mobile type liquid crystal display device, the area of the reflective display portion is small. However, the effect of obtaining a bright reflective display can be obtained.

  Next, a schematic diagram showing a configuration of a liquid crystal display device of the present invention shown in FIG. As shown in the drawing, the liquid crystal display device 50 of the present invention is a liquid crystal display device 30, the scanning side drive circuit 51, constituted by the signal side driving circuit 52 and the signal processing circuit 53. Although not shown, as described above, a backlight composed of a cold cathode tube, a light guide, a prism sheet, and a diffusion sheet is disposed on the back surface of the liquid crystal display element 30.

  As described above, according to the present invention, using a conductive reflective material having a reflective function, to form a reflector 17 having a small convex or concave shape of the light scattering and reflection function, disordered the reflector 17 By dispersively arranging, the ratio of the total area of the plurality of reflectors 17 serving as the reflective display portion to the area of the pixel electrode 16 can be arbitrarily controlled, so coloring due to interference regardless of lighting conditions such as indoor and outdoor A liquid crystal display device capable of displaying a bright and high-contrast image without causing occurrence of light can be provided.

  As for the arrangement method of the reflector 17 having the light scattering and light reflection functions in the present invention, those using a random number table, those using a Fibonacci sequence, a phase separation pattern expressed in a polymer block copolymer, etc. The same effect can be obtained as long as the method can be randomly distributed, such as the one to be used, but more preferably, a phase separation pattern in which the aperture ratio of the transmissive display portion and the reflective display portion is highly accurate and can be arbitrarily controlled is used. An arrangement method is desirable.

  Further, as long as the method can arbitrarily control the total area occupied by the reflector 17 as well as randomly arranging the reflectors 17 having the light scattering function and the light reflection function, a desired transmission / reception can be performed. it is possible to determine the reflection display aperture ratio of the high intensity lighting conditions used, the effect of a high contrast image can be provided to display at the moment the liquid crystal display device is obtained.

  FIG. 7 shows an embodiment of the present invention in which a reflector 67 having a light scattering function and a light reflecting function is incorporated under a transparent pixel electrode 66 and has a pixel electrode 66 for both transmissive and reflective display, which is distributed and distributed at a desired density. Another liquid crystal display device is shown. As shown in the figure, by a vacuum deposition method and the photolithography process of a general purpose on a glass substrate 60, to form a plurality of thin film transistors 19. The thin film transistor 19, a gate electrode 61, the gate insulating film 62, the amorphous silicon layer 63, n-type amorphous silicon layer 63 doped with phosphorus as an impurity ', is composed of the drain electrode 64 and the source electrode 65, a material described below, the film Have a thickness.

The material of the gate electrode 61: chrome, film thickness: 50 to 600 nm, preferably 100 to 300 nm.
The material of the gate insulating film 62, silicon nitride, thickness: 100 to 1000 nm, preferably 200 to 500 nm.
Film thickness of the amorphous silicon layer 63: 50 to 1000 nm, preferably 100 to 500 nm.
Film thickness of amorphous silicon layer 63 ′ doped with phosphorus as an n-type impurity: 5 to 100 nm, preferably 10 to 50 nm.
The material of the drain electrode 64 is chromium, and the film thickness is 50 to 600 nm, preferably 100 to 300 nm.
The material of the source electrode 65: chrome, thickness: 50 to 600 nm, preferably 100 to 300 nm.
Although not shown, drain wiring material: chrome, film thickness: 50 to 600 nm, preferably 100 to 300 nm.

  Next, an insulating layer / liquid crystal thickness control layer 68 (material: acrylic resin, film thickness: 500 to 3000 nm, preferably 1000 to 2000 nm) and a contact hole portion 68 ′ are formed.

  Thereafter, a paste using silver fine particles only in 68 parts of the thickness control layer for reflective display is used by an ink jet method or an offset printing method to form a minute convex or concave reflector 67 having a light scattering function and a light reflection function ( Shape: A circle (diameter: 3 to 15 μm, height (or depth): 0.2 to 1 μm), polygon, bar, string, or a shape similar thereto is formed. This paste uses, for example, Harima Kasei Co., Ltd., model: NPS-J, and its material and characteristics are shown below.

Material: Silver, silver / palladium / copper alloy, metal such as aluminum, titanium and gold, metal particle diameter: 1 to 20 nm, preferably 2 to 10 nm.
Binder: Thermosetting resin.
Solvent: Nonpolar solvents such as tetradecane and dodecane.
Viscosity: 1-50 cps, preferably 2-10 cps.
Surface tension: 1 to 60 dyn / cm, preferably 2 to 30 dyn / cm.
Curing temperature: 150-300 ° C, preferably 200-250 ° C.
Resistivity: 1 to 50 μΩ · cm (film thickness: 01 to 10 μm), preferably 5 to 30 μΩ · cm.

  Further, the transparent pixel electrode 66 so as to be electrically connected to the thin film transistor 19 (material: ITO (Indium Tin Oxide), thickness: 50 to 600 nm, preferably 100 to 300 nm) is formed and on the pixel electrode 66 An orientation control film 69 (material: polyimide resin, coating method: spin coat, film thickness: 50 to 600 nm, preferably 100 to 300 nm) is formed to produce one electrode substrate.

  Next, a light shielding layer 71, a colored layer 72, a protective layer 73, a transparent electrode 74, and an orientation control film 75 are formed on the glass substrate 70 by a general-purpose vacuum deposition method and a photolithography method, and the other electrode substrate is manufactured. . Hereinafter, these materials and film thicknesses are shown.

The material of the light shielding layer 71: chromium and chromium oxide, film thickness: 50 to 600 nm, preferably 100 to 300 nm.
Base material of colored layer 72: acrylic resin, dispersion material: pigment, coating method: spin coating, film thickness: 500 to 3000 nm, preferably 1000 to 2000 nm.
The material of the protective layer 73: acrylic resin, coating method: spin coating, film thickness: 500 to 4000 nm, preferably 1000 to 3000 nm.
The material of the transparent electrode 74: ITO (Indium Tin Oxide), film thickness: 50 to 600 nm, preferably 100 to 300 nm.
Material of the orientation control film 75: polyimide resin, coating method: spin coating, film thickness: 50 to 600 nm, preferably 100 to 300 nm.

  Here, the spacer material 2 (material: polymer beads, silica beads, particle diameter: 5 μm, dispersion method: water so that the orientation control film 69 of one electrode substrate and the orientation control film 75 of the other electrode substrate face each other. The periphery of both electrode substrates 60 and 70 is bonded with a sealing material (not shown, material: epoxy resin, dispersion material: spacer particles), and liquid crystal 1 is placed in the gap between both electrode substrates 60 and 70. To form a transflective liquid crystal element.

  In addition, the desired retardation plates 3 and 5 and the polarizing plates 4 and 6 are bonded to both glass substrate surfaces of the transflective liquid crystal element, and the TCP having the liquid crystal driving IC and the driving external circuit are connected. Thus, a transflective liquid crystal display element 30 is formed, and the liquid crystal display element 30 includes a light source 41 (cold cathode tube, LED), a light guide 42 (material: acrylic), a prism sheet 43, a diffusion sheet 44, and the like. The transflective liquid crystal display device 50 is manufactured by incorporating the backlight 40 into a casing made of a frame, a case, and the like.

  The configuration of the pixel electrode 66, the arrangement pattern of the reflector 67, the configuration of the liquid crystal display device, and the like are the same as those in the first embodiment, and detailed description thereof is omitted.

  As described above, according to the present invention, the minute reflectors 67 having the light scattering function and the light reflection function can be randomly arranged and formed at any density in the pixel electrode 66. It is possible to control the total area of the body 67 with high accuracy, and the proportion of the reflective display part to the area of the pixel electrode can be controlled arbitrarily, so coloring due to interference regardless of indoor and outdoor lighting conditions A liquid crystal display device capable of displaying a bright and high-contrast image without causing occurrence of light can be provided.

  As for the arrangement method of the minute reflector 67 in the present invention, those using a random number table, those using a Fibonacci sequence, those using a phase separation pattern expressed in a polymer block copolymer, etc. as long as the method can be arranged to better, and more preferably, to use phase separation patterns can be arbitrarily controlled proportion of the area of the reflective display and the transmissive display unit to the area of one pixel it is desired.

  That is, as long as the method can arbitrarily control the ratio of the total area of the reflector 67 to the area of the pixel electrode 66 as well as disposing the reflector 67 at an arbitrary position and in an arbitrary shape and density, as such, it is possible to determine the opening ratio of the desired transmission and reflection display can high luminance, the liquid crystal display device capable of image display of high contrast provides the illumination conditions used.

  FIG. 8 shows a passive drive system book in which reflectors 82 having a light scattering function and a light reflecting function are arranged under a transparent electrode 81 and have transparent electrodes 81 for both transmissive display and reflective display built in dispersedly arranged at a desired density. 1 shows a liquid crystal display device of the invention.

  As shown in the figure, on a glass substrate 80 (material: soda glass, plate thickness: 0.5 mm), a paste mainly composed of silver fine particles is applied to an area corresponding to the transparent electrode 81 using an inkjet method. small convex or concave reflector 82 (shape: circle (diameter: 3 to 15 [mu] m, the height (or depth): 0.2 to 1 [mu] m), polygonal, rod, string-like, or shape approximating thereto) dispersed Place and form. The paste, for example, Harima Kasei silver nano paste, model: with using the NPS-J, the material shown below, the characteristics.

Material: Silver, silver / palladium / copper alloy, metal such as aluminum, titanium and gold, metal particle diameter: 1 to 20 nm, preferably 2 to 10 nm.
Binder: Thermosetting resin.
Solvent: Nonpolar solvents such as tetradecane and dodecane.
Viscosity: 1-50 cps, preferably 2-10 cps.
Surface tension: 1-60 dyn / cm, preferably 5-30 dyn / cm.
Curing temperature: 150-300 ° C, preferably 200-250 ° C.
Resistivity: 1~50μΩ · cm (thickness: 01~10μm), preferably 5~30μΩ · cm.

  Thereafter, the transparent electrode 81 (material: ITO (Indium Tin Oxide), film-coated Method: sputtering, film thickness: 50 to 600 nm, preferably 100 to 300 nm) is formed and further, the alignment layer on the transparent electrode 81 83 (material: polyimide resin, coating method: spin coat, film thickness: 50 to 600 nm, preferably 100 to 300 nm) is formed, and one electrode substrate is prepared.

  Next, a light shielding layer 91, a colored layer 92, a protective layer 93, a transparent electrode 94, and an orientation control film 95 are formed on the other glass substrate 90 (material: soda glass, plate thickness: 0.5 mm), and the other electrode A substrate is produced. Hereinafter, these materials and film thicknesses are shown.

The material of the light shielding layer 91: chromium and chromium oxide, film thickness: 50 to 600 nm, preferably 100 to 300 nm, or base material: acrylic resin, dispersion material: black pigment, coating method: spin coat, film thickness: 500 to 3000 nm, preferably 1000 to 2000 nm.
Base material of the colored layer 92: acrylic resin, dispersion material: pigment, coating method: spin coating, film thickness: 500 to 3000 nm, preferably 1000 to 2000 nm.
The material of the protective layer 93: acrylic resin, coating method: spin coating, film thickness: 500 to 4000 nm, preferably 1000 to 3000 nm.
The material of the transparent electrode 94: ITO (Indium Tin Oxide), film thickness: 50 to 600 nm, preferably 100 to 300 nm).
Material of the orientation control film 95: polyimide resin, coating method: spin coating, film thickness: 50 to 600 nm, preferably 100 to 300 nm.

  Here, the spacer material 2 (material: polymer beads, silica beads, particle diameter: 5 μm, dispersion method: water so that the orientation control film 83 of one electrode substrate and the orientation control film 95 of the other electrode substrate face each other. combining through a dispersion), without sealing material (not the periphery of the electrode substrates, material: epoxy resin, dispersing agent: adhered in spacer particles), liquid crystal device was filled with liquid crystal 1 in the gap between the two electrode substrates Form.

  Next, the desired phase difference plates 3 and 5 and the polarizing plates 4 and 6 are bonded to the two glass substrates 80 and 90 of the liquid crystal element, and the TCP on which the liquid crystal driving IC is mounted and the driving external circuit are connected. The liquid crystal display element 30 is formed, and the liquid crystal display element 30 includes a light source 41 (cold cathode tube, LED), a light guide 42 (material: acrylic), a prism sheet 43, a diffusion sheet 44, and the like. The liquid crystal display device 50 is manufactured by incorporating 40 into a casing made of a frame, a case, and the like.

  Note that basically the same as the first embodiment configuration and the like of the arrangement and the liquid crystal display device of the reflector 82 to the transparent electrode 81 under, a detailed description thereof will be omitted.

  The present invention is a liquid crystal display device having a very small reflector 82 having the light scattering function and a light reflecting function and distributed under the transparent electrode 81, the transparent electrode 81 of transmissive and reflective display combined, micro reflectors 82 Is used as a reflective display part, and the other part is used as a transmissive display part, so that the transparent electrode 81 can be used for both transmissive and reflective display. A liquid crystal display device can be provided.

  The liquid crystal display device incorporating the transparent electrode 81 having both the light scattering function and the light reflection function of the present invention, which is used for both transmissive and reflective displays, is particularly suitable for mobile phones, PDAs, and desktops used by the observer. It is effective for a wide range of notebook-type PCs and liquid crystal display devices used for monitors, and it is easy to design and manufacture electrodes for both transmissive and reflective displays that are optimal for the lighting environment to be used. A low-cost liquid crystal display device capable of displaying a bright and high-contrast image can be provided.

  FIG. 9 shows a manufacturing method suitable for the liquid crystal display device for portable equipment incorporating the electrode for both transmissive / reflective display of the present invention. The manufacturing method of the present invention particularly comprises the steps (a) to (d) of FIG.

  FIG (a) is a general vacuum deposition method and photolithography technique, a glass substrate 10 on the gate electrode 11, gate insulating film 12, the amorphous layer 13, the drain electrode 14, forming a plurality of thin film transistors 19 consisting of a source electrode 15 It is a process to do.

  In FIG. 5B, an ink jet pattern forming apparatus 100 is used on the gate insulating film 12 in a region corresponding to the pixel electrode 16 formed so as to be connected to the source electrode 15, and the silver fine particles are mainly used. A fine convex or concave reflector 17 having a light scattering function and a light reflecting function (shape: circle (diameter: 3 to 15 μm, height (or depth): 0.2 to 1 μm), polygon, rod-like, cord-like, or shape) that approximated formed by distributed to them, further, a step of forming a pixel electrode 16 which is connected to the source electrode 15. The paste used here is, for example, manufactured by Harima Chemicals, and has the following materials and characteristics.

Material: Silver, silver / palladium / copper alloy, metal such as aluminum, titanium and gold, metal particle diameter: 1 to 20 nm, preferably 2 to 10 nm.
Binder: Thermosetting resin.
Solvent: Nonpolar solvents such as tetradecane and dodecane.
Viscosity: 1-50 cps, preferably 2-10 cps.
Surface tension: 1-60 dyn / cm, preferably 5-30 dyn / cm.
Curing temperature: 150-300 ° C, preferably 200-250 ° C.
Resistivity: 1~50μΩ · cm (thickness: 01~10μm), preferably 5~30μΩ · cm.

  FIG. 6C shows an alignment control film 18 (material: polyimide resin, coating method: spin coat, film thickness: 50 to 600 nm, preferably 100 to 300 nm) on the pixel electrode 16 formed in FIG. Is a step of forming. One electrode substrate is manufactured through the above steps.

  In FIG. 4D, a light shielding layer 21, a colored layer 22, a protective layer 23, a transparent electrode 24, and an orientation control film 25 are formed on the other glass substrate 20 (material: AN glass, plate thickness: 0.5 mm). The other electrode substrate is manufactured in this step. These materials and film thicknesses are shown below.

The material of the light shielding layer 21: chromium and chromium oxide, film thickness: 50 to 600 nm, preferably 100 to 300 nm.
Base material of the colored layer 22: acrylic resin, dispersion material: pigment, coating method: spin coating, film thickness: 500 to 3000 nm, preferably 1000 to 2000 nm.
The material of the protective layer 23: acrylic resin, coating method: spin coating, film thickness: 500 to 4000 nm, preferably 1000 to 3000 nm.
The material of the transparent electrode 24: ITO (Indium Tin Oxide), film thickness: 50 to 600 nm, preferably 100 to 300 nm.
Material of the orientation control film 25: polyimide resin, coating method: spin coating, film thickness: 50 to 600 nm, preferably 100 to 300 nm.

  Here, as shown in FIG. 2 (d), the spacer member 2 so that their alignment control film 18 and 25 are opposed to each other (material: polymer beads, silica beads, particle size: 5 [mu] m, dispersion method: aqueous dispersion) of combined through, (not shown, material: epoxy resin, dispersing agent: spacer particles) the periphery of the electrode substrates sealing material is bonded in to form a liquid crystal device is filled with the liquid crystal 1 in the gap between the two electrode substrates .

  Furthermore, although not shown in the figure, a step of attaching a desired retardation plate and a polarizing plate to both glass substrates 10 and 20 of the liquid crystal element, a TCP equipped with a liquid crystal driving IC, and an external circuit for driving are connected. Forming a liquid crystal display element, and a backlight comprising a light source (cold cathode tube, LED), a light guide (material: acrylic), a prism sheet, a diffusion sheet, etc. And a step of forming a liquid crystal display device by being incorporated in a casing made of the like.

  In this embodiment, as the transmissive / reflective display combined electrode, minute convex reflectors having a light scattering function and a light reflective function are randomly distributed under the transparent conductive layer, and the transparent electrode and the convex electrode are arranged. The conductive material is configured to be electrically connected, but the conductive material is not coated on the transparent conductive layer in the portion excluding the portion where the convex reflector is formed in advance. It may be a manufacturing method in which a material material is applied and a reflector is disposed only on a portion without a repellent material by a pattern forming apparatus or the like, and similarly to this embodiment, it is bright regardless of whether it is indoors or outdoors. and high-contrast image display capable of low-cost liquid crystal display device can be provided.

  According to the manufacturing method of the liquid crystal display device of the present invention, it is possible to easily use both a transmissive display / reflective display by a printing method, a transfer method, a dispenser method, etc. without using a photolithography method, a vacuum deposition method or the like as in the conventional method. since it is the electrode formation, an indoor, bright both outdoor and contrast image having high-visible low-cost liquid crystal display device can be provided.

  Further, the conventional method for forming a transmission / reflection electrode is as follows: 1) photosensitive resin coating process (spin coating method), 2) unevenness (including contact hole) forming process on the surface of the resin film (photolithography method), 3 ) Reflective film attaching step (vacuum deposition method), 4) Reflective film pattern forming step (photolithography method), 5) Transparent conductive film attaching step (vacuum vapor deposition method), 6) Transparent conductive film pattern forming step ( However, the manufacturing method of the present invention not only has a small number of steps, but also requires a member for reducing the transmittance or the reflectance with respect to the transmissive display / reflective display. since the manufacturing method is not indoor, bright both outdoor and contrast image having high-visible low-cost liquid crystal display device can be provided.

  Furthermore, as described above, the manufacturing method of the transmission / reflection electrode according to the present invention is a simple structure in which the transmission / reflection electrode is configured with a transparent pixel electrode and a reflector having a light scattering function and a light reflection function. It is possible to provide a liquid crystal display device that can display a bright and high-contrast image regardless of whether it is indoors or outdoors, and is inexpensive and highly reliable.

  FIG. 10 shows another manufacturing method suitable for the liquid crystal display device for portable equipment incorporating the electrode for transmission / reflection display of the present invention. Here, an active drive type liquid crystal display device will be described as an example, but the manufacturing process of the transmissive / reflective display combined electrode is basically the same in the passive drive type. The manufacturing method of the present invention particularly comprises the steps (a) to (d) of FIG.

  FIG (a) is, by vacuum deposition and photolithography of the general-purpose glass substrate 10 (material: alkali-free glass, thickness: 0.5 mm) gate electrode 11 on the gate insulating film 12, the amorphous layer 13, the drain In this process, a thin film of a photosensitive paste 17 ′ mainly composed of silver fine particles is formed on a thin film transistor 19 including an electrode 14 and a source electrode 15, and exposed and developed under a predetermined condition through a photomask 105. The material and characteristics of the photosensitive paste 17 ′ are shown below.

Material: Silver, silver / palladium / copper alloy, metal such as aluminum, titanium and gold, metal particle diameter: 1 to 20 nm, preferably 2 to 10 nm.
Binder: Positive photosensitive resin.
Solvent: Nonpolar solvents such as tetradecane and dodecane.
Viscosity: 1-50 cps, preferably 2-10 cps.
Surface tension: 1-60 dyn / cm, preferably 5-30 dyn / cm.
Curing temperature: 150-300 ° C, preferably 200-250 ° C.
Resistivity: 1~50μΩ · cm (thickness: 01~10μm), preferably 5~30μΩ · cm.

  FIG. 6B shows a small convex or concave portion having a light scattering function and a light reflecting function obtained by sintering the photosensitive paste 17 ′ formed on the gate insulating film 12 in FIG. In the step of distributing and arranging the reflectors 17 (shape: circle (diameter: 3 to 15 μm, height (or depth): 0.2 to 1 μm), polygon, rod, string, or a shape similar to them) is there.

  FIG. 6C shows a transparent pixel electrode 16 (material: ITO (Indium Tin Oxide), film thickness: 50 to 600 nm, preferably on the reflector 17 and the gate insulating film 12 formed in FIG. 100 to 300 nm), and further, an alignment control film 18 (material: polyimide resin, coating method: spin coat, film thickness: 50 to 600 nm, preferably 100 to 300 nm) is formed on the pixel electrode 16. . One electrode substrate is manufactured through the above steps.

  In FIG. 4D, a light shielding layer 21, a colored layer 22, a protective layer 23, a transparent electrode 24, and an orientation control film 25 are formed on the other glass substrate 20 (material: alkali-less glass, plate thickness: 0.5 mm). It is a process to do. In this step, the other electrode substrate is produced. These materials and film thicknesses are shown below.

The material of the light shielding layer 21: chromium and chromium oxide, film thickness: 50 to 600 nm, preferably 100 to 300 nm, or base material: acrylic resin, dispersion material: black pigment, coating method: spin coat, film thickness: 500 to 3000 nm , Preferably 1000 to 2000 nm.
Base material of the colored layer 22: acrylic resin, dispersion material: pigment, coating method: spin coating, film thickness: 500 to 3000 nm, preferably 1000 to 2000 nm).
The material of the protective layer 23: acrylic resin, coating method: spin coating, film thickness: 500 to 4000 nm, preferably 1000 to 3000 nm.
The material of the transparent electrode 24: ITO (Indium Tin Oxide), film thickness: 50 to 600 nm, preferably 100 to 300 nm.
Material of the orientation control film 25: polyimide resin, coating method: spin coating, film thickness: 50 to 600 nm, preferably 100 to 300 nm.

  Here, as shown in FIG. (C), mutual alignment layer 18 and 25 so as to face the spacer member 2 (the material of the electrode substrates: polymer beads, silica beads, particle size: 5 [mu] m, dispersion method: combining through a water dispersion), without sealing material (not the periphery of the electrode substrates, material: epoxy resin, dispersing agent: adhered in spacer particles), it was filled with the liquid crystal 1 in the gap between the two electrode substrates crystal An element is formed.

  Furthermore, although not shown in the figure, a step of attaching a desired retardation plate and a polarizing plate to both glass substrates 10 and 20 of the liquid crystal element, a TCP equipped with a liquid crystal driving IC, and an external circuit for driving are connected. Forming a transflective liquid crystal display element, and a backlight comprising a light source (cold cathode tube, LED), a light guide (material: acrylic), a prism sheet, a diffusion sheet, etc. And a step of forming a liquid crystal display device that simultaneously performs transmission and reflection display by incorporating the frame into a casing made of a frame, a case, and the like.

  According to the method for manufacturing a transflective liquid crystal display device of the present invention, a transmissive display / transfer method or a dispenser method can be easily used without using a photolithography method or a vacuum deposition method as in the conventional method. since it is the electrode formed in the reflective display combined, indoors, bright both outdoor and contrast image having high-visible low-cost liquid crystal display device can be provided.

  Further, the conventional method for forming a transmission / reflection electrode is as follows: 1) photosensitive resin coating process (spin coating method), 2) unevenness (including contact hole) forming process on the surface of the resin film (photolithography method), 3 ) Reflective film attaching step (vacuum deposition method), 4) Reflective film pattern forming step (photolithography method), 5) Transparent conductive film attaching step (vacuum vapor deposition method), 6) Transparent conductive film pattern forming step ( However, the manufacturing method of the present invention not only has a small number of steps, but also does not require a member that reduces the transmittance or the reflectance with respect to the transmissive display / reflective display. Since it is a manufacturing method, it is possible to provide a low-cost liquid crystal display device capable of displaying a bright and high-contrast image regardless of whether it is indoors or outdoors.

  Further, as described above, the manufacturing method of the transmission / reflection combined electrode of the present invention has a simple structure constituting the transmission / reflection combined electrode with reflector having a transparent pixel electrode and the light scattering function and a light reflecting function, It is possible to provide a liquid crystal display device that can display a bright and high-contrast image regardless of whether it is indoors or outdoors, and is inexpensive and highly reliable.

  FIG. 11 shows another manufacturing method suitable for the liquid crystal display device for portable equipment incorporating the electrode for both transmission / reflection display of the present invention. Here, a passive drive type liquid crystal display device will be described as an example, but the manufacturing process of the transmissive / reflective electrode is basically the same in the active drive type. The manufacturing method of the present invention comprises the steps (a) to (e) of FIG.

  The figure (a) shows the desired minute concave shape (shape: circle (diameter: 3 to 15 μm, height (or depth): 0.2 to 1 μm), polygon, rod, string, or similar to them. The pattern forming apparatus is composed of a transfer mold 110 having a shape) and having a surface provided with a peeling function by silicon treatment or the like, and a paste 82 'mainly composed of silver fine particles filled in the recesses of the transfer mold 110. This paste 82 'has the following materials and characteristics.

Material: Silver, silver / palladium / copper alloy, metal such as aluminum, titanium and gold, metal particle diameter: 1 to 20 nm, preferably 2 to 10 nm.
Binder: Thermosetting resin.
Solvent: Nonpolar solvents such as tetradecane and dodecane.
Viscosity: 1-50 cps, preferably 2-10 cps.
Surface tension: 1-60 dyn / cm, preferably 5-30 dyn / cm.
Curing temperature: 150-300 ° C, preferably 200-250 ° C.
Resistivity: 1~50μΩ · cm (thickness: 01~10μm), preferably 5~30μΩ · cm.

  FIG (b), a glass substrate 80 (material: soda glass, thickness: 0.5 mm) by distributed and sintered in a region corresponding to the transparent electrodes on, minute having a light scattering function and a light reflecting function In the process of forming a convex reflector 82 (shape: circle (diameter: 3 to 15 μm, height (or depth): 0.2 to 1 μm), polygon, bar, string, or shape similar to them) is there.

  FIG. 4C shows a step of forming a transparent electrode 81 (material: ITO (Indium Tin Oxide), film thickness: 50 to 600 nm, preferably 100 to 300 nm) on the reflector 82 on the glass substrate 80.

  FIG. 6D shows a step of forming an orientation control film 18 (material: polyimide resin, coating method: spin coating, film thickness: 50 to 600 nm, preferably 100 to 300 nm) on the transparent electrode 81. One electrode substrate is manufactured through the above steps.

  FIG (e), the other glass substrate 90 (material: soda glass, thickness: 0.5 mm) on the light-shielding layer 91, the colored layer 92, protective layer 93, transparent electrodes 94, to form an alignment control film 95 It is a process. In this step, the other electrode substrate is produced. These materials and film thicknesses are shown below.

The material of the light shielding layer 91: chromium and chromium oxide, film thickness: 50 to 600 nm, preferably 100 to 300 nm, or base material: acrylic resin, dispersion material: black pigment, coating method: spin coat, film thickness: 500 to 3000 nm , Preferably 1000 to 2000 nm.
Base material of the colored layer 92: acrylic resin, dispersion material: pigment, coating method: spin coating, film thickness: 500 to 3000 nm, preferably 1000 to 2000 nm.
The material of the protective layer 93: acrylic resin, coating method: spin coating, film thickness: 500 to 4000 nm, preferably 1000 to 3000 nm.
The material of the transparent electrode 94: ITO (Indium Tin Oxide), film thickness: 50 to 600 nm, preferably 100 to 300 nm.
Material of the orientation control film 95: polyimide resin, coating method: spin coating, film thickness: 50 to 600 nm, preferably 100 to 300 nm.

  Here, as shown in FIG. 5E, the spacer material 2 (material: polymer beads, silica beads, particle diameter: 5 μm, dispersion method: so that the alignment control films 83 and 95 of both electrode substrates face each other. A liquid crystal in which the periphery of both electrode substrates is bonded with a sealing material (not shown, material: epoxy resin, dispersion material: spacer particles), and liquid crystal 1 is filled in the gap between both electrode substrates. An element is formed.

  Furthermore, although not shown in the drawing, a step of attaching a desired retardation plate and a polarizing plate to both glass substrates 80 and 90 of the liquid crystal element, a TCP having a liquid crystal driving IC mounted thereon, a driving external circuit, and the like are connected. Forming a liquid crystal display element, and a backlight comprising a light source (cold cathode tube, LED), a light guide (material: acrylic), a prism sheet, a diffusion sheet, etc. A liquid crystal display device capable of simultaneously performing transmissive display and reflective display is manufactured by being incorporated in a casing made of a material such as the above.

  According to the manufacturing method of the liquid crystal display device of the present invention, it is possible to easily use both a transmissive display / reflective display by a printing method, a transfer method, a dispenser method, etc. without using a photolithography method, a vacuum deposition method, etc. Since electrodes can be formed, a low-cost liquid crystal display device capable of displaying a bright and high-contrast image regardless of indoors or outdoors can be provided.

  Further, the conventional method for forming a transmission / reflection electrode is as follows: 1) photosensitive resin coating process (spin coating method), 2) unevenness (including contact hole) forming process on the surface of the resin film (photolithography method), 3 ) Reflective film attaching step (vacuum deposition method), 4) Reflective film pattern forming step (photolithography method), 5) Transparent conductive film attaching step (vacuum vapor deposition method), 6) Transparent conductive film pattern forming step ( but it was complicated consisting photolithography) and method of the present invention, not only is a reduced number of steps, requiring a member to lower the transmittance or reflectance for transmissive display / reflective display Therefore, it is possible to provide a low-cost liquid crystal display device capable of displaying a bright and high-contrast image regardless of whether it is indoors or outdoors.

  Further, as described above, the method for manufacturing the transmission / reflection electrode according to the present invention is a simple structure in which the transmission / reflection electrode is composed of a transparent electrode and a reflector having a light scattering function and a light reflection function. It is possible to provide a liquid crystal display device that can display a bright and high-contrast image regardless of the outdoors and is low in price and high in reliability.

  FIG. 12 shows another manufacturing method suitable for the liquid crystal display device for portable devices incorporating the transmission / reflection electrode of the present invention. Here, a passive drive type liquid crystal display device will be described as an example, but the manufacturing process of the transmissive / reflective electrode is basically the same in the active drive type. The manufacturing method of the present invention comprises the steps (a) to (e) of FIG.

  The figure (a) shows the desired minute concave shape (shape: circle (diameter: 3 to 15 μm, height (or depth): 0.2 to 1 μm), polygon, rod, string, or similar to them. a pattern forming apparatus 120 having a sheet-like transfer mold having a shape), pattern formation comprising the pattern forming apparatus 120 of the sheet-like transfer type filled in the recess formed silver particles were mainly paste 82 ' Device. The material and characteristics of this paste 82 'are shown below.

Material: Silver, silver / palladium / copper alloy, metal such as aluminum, titanium and gold, metal particle diameter: 1 to 20 nm, preferably 2 to 10 nm.
Binder: Thermosetting resin.
Solvent: Nonpolar solvents such as tetradecane and dodecane.
Viscosity: 1-50 cps, preferably 2-10 cps.
Surface tension: 1-60 dyn / cm, preferably 5-30 dyn / cm.
Curing temperature: 150-300 ° C, preferably 200-250 ° C.
Resistivity: 1~50μΩ · cm (thickness: 01~10μm), preferably 5~30μΩ · cm.

  In FIG. 6B, a sheet-shaped transfer mold is superimposed on a glass substrate 80 (material: soda glass, plate thickness: 0.5 mm), heated and pressurized by a roll 130, and paste 82 on the glass substrate 80. after distributed to ', and sintered, micro reflectors convex shape having a light scattering function and reflecting light 82 (shape: circle (diameter: 3 to 15 [mu] m, the height (or depth): 0.2 1 μm), polygon, bar, string, or approximate shape thereof.

  FIG. 4C shows a step of forming a transparent electrode 81 (material: ITO (Indium Tin Oxide), film thickness: 50 to 600 nm, preferably 100 to 300 nm) on the reflector 82 formed on the glass substrate 80. It is.

  FIG. 6D shows an orientation control film 83 (material: polyimide resin, coating method: spin coat, film thickness: 50 to 600 nm, preferably 100 to 300 nm) on the transparent electrode 81 formed in FIG. Is a step of forming. One electrode substrate is manufactured through the above steps.

  FIG (e), the other glass substrate 90 (material: soda glass, thickness: 0.5 mm) on the light-shielding layer 91, the colored layer 92, protective layer 93, transparent electrodes 94, to form an alignment control film 95 It is a process. In this step, the other electrode substrate is produced. These materials and film thicknesses are shown below.

The material of the light shielding layer 91: chromium and chromium oxide, film thickness: 50 to 600 nm, preferably 100 to 300 nm, or base material: acrylic resin, dispersion material: black pigment, coating method: spin coat, film thickness: 500 to 3000 nm , Preferably 1000 to 2000 nm.
Base material of the colored layer 92: acrylic resin, dispersion material: pigment, coating method: spin coating, film thickness: 500 to 3000 nm, preferably 1000 to 2000 nm.
The material of the protective layer 93: acrylic resin, coating method: spin coating, film thickness: 500 to 4000 nm, preferably 1000 to 3000 nm.
The material of the transparent electrode 94: ITO (Indium Tin Oxide), film thickness: 50 to 600 nm, preferably 100 to 300 nm.
Material of the orientation control film 95: polyimide resin, coating method: spin coating, film thickness: 50 to 600 nm, preferably 100 to 300 nm.

  Here, as shown in FIG. 5E, the spacer material 2 (material: polymer beads, silica beads, particle diameter: 5 μm, dispersion method: so that the alignment control films 83 and 95 of both electrode substrates face each other. A liquid crystal in which the periphery of both electrode substrates is bonded with a sealing material (not shown, material: epoxy resin, dispersion material: spacer particles), and liquid crystal 1 is filled in the gap between both electrode substrates. An element is formed.

  Furthermore, although not shown in the drawing, a step of attaching a desired retardation plate and a polarizing plate to both glass substrates 80 and 90 of the liquid crystal element, a TCP having a liquid crystal driving IC mounted thereon, a driving external circuit, and the like are connected. Forming a liquid crystal display element, and a backlight comprising a light source (cold cathode tube, LED), a light guide (material: acrylic), a prism sheet, a diffusion sheet, etc. A liquid crystal display device that is incorporated in a housing made of the same and performing simultaneous transmission display and reflection display is manufactured.

  According to the manufacturing method of the liquid crystal display device of the present invention, it is possible to easily use both a transmissive display / reflective display by a printing method, a transfer method, a dispenser method, etc. without using a photolithography method, a vacuum deposition method, etc. Since electrodes can be formed, a low-cost liquid crystal display device capable of displaying a bright and high-contrast image regardless of indoors or outdoors can be provided.

  Further, the conventional method for forming a transmission / reflection electrode is as follows: 1) photosensitive resin coating process (spin coating method), 2) unevenness (including contact hole) forming process on the surface of the resin film (photolithography method), 3 ) Reflective film attaching step (vacuum deposition method), 4) Reflective film pattern forming step (photolithography method), 5) Transparent conductive film attaching step (vacuum vapor deposition method), 6) Transparent conductive film pattern forming step ( However, the manufacturing method of the present invention not only has a small number of steps, but also requires a member for reducing the transmittance or the reflectance with respect to the transmissive display / reflective display. Therefore, it is possible to provide a low-cost liquid crystal display device capable of displaying a bright and high-contrast image regardless of whether it is indoors or outdoors.

  Furthermore, as described above, the method for manufacturing a transmission / reflection electrode according to the present invention includes a transparent electrode and a reflector having a light scattering function and a light reflection function, and a transmission / reflection electrode (electrode for transmission / reflection display). Since the structure is simple, a bright and high-contrast image can be displayed whether indoors or outdoors, and a liquid crystal display device with low cost and high reliability can be provided.

  As described above, the present invention uses a pattern due to a phase separation phenomenon expressed in a polymer block copolymer or the like, or a pattern close to them, for shape control of a reflector having a light scattering function and a light reflection function. By creating the phase separation pattern by computer simulation and using its concentration distribution data, it is possible not only to produce a gradation exposure mask (for example, HEBS-Glass Plate CANYON MATERIALS, INC), but also to diffuse a desired shape. The effect that the reflector can be formed only by the steps of exposure, development and curing using a photosensitive resin is also obtained. In addition, a resin pattern is produced using the gradation exposure mask, a transfer mold or a printing plate is produced using the resin pattern, and a pixel electrode for both transmissive and reflective display is produced by a transfer method or a printing method. By forming the structure, there is an effect that the cost can be reduced.

  In addition, in order to use a phase separation pattern expressed in a polymer block copolymer or the like as a pattern for arranging the reflectors randomly, the phase separation pattern is generated by a computer simulation method.

  Furthermore, it is used for gradation exposure used when forming a resin pattern, light shielding pattern (or transmission pattern) of a binary photomask, or formation of a convex or concave pattern master mask formed on a transfer mold.

  In addition, the present invention provides a simulation method for generating a phase separation pattern expressed in a polymer copolymer, etc. 1) Cahn-Hilliard-Cook equation, 2) Time-dependent Ginzburg-Landau equation, 3) Cell-Dyamical-System equation This is a numerical simulation using the above.

  Furthermore, the pattern of the light-shielding part or the transmission part for the photomask used for the reflector having the light scattering function and the light reflecting function of the present invention and the arrangement pattern thereof is a phase distribution concentration distribution pattern (numerical value) generated by numerical simulation. Data) and a diffuse reflector are data (image) processed using a computer.

  As for the arrangement method of the minute reflectors having the light scattering function and the light reflection function in the present invention, those using a random number table, those using a Fibonacci sequence, phase separation expressed in a polymer block copolymer, etc. Any method can be used as long as it can be arranged randomly, such as using a pattern. More preferably, an arrangement method that can arbitrarily control the ratio between the transmissive display area and the reflective display area is desirable.

  In other words, according to the present invention, not only can the reflectors having the light scattering function and the light reflection function be arranged randomly, but also a method that can arbitrarily control the total area (total area) occupied by the reflector is used. Since the ratio of the transmissive and reflective display areas in one pixel can be determined in accordance with the illumination conditions and applications to be used, an optimal display can be obtained under the illumination conditions in the environment used.

  First, hemispherical projections or depressions were arranged randomly and at a desired density by numerical analysis methods such as the Cell-Dynamical-System model for analyzing the phase separation phenomenon that occurs in polymer block copolymers. A pattern is created as density distribution data, and a gradation exposure photomask corresponding to the light shielding amount (transmitted light amount) is manufactured using the density distribution data. Next, the gradation exposure photomask and is removed in proportion to the exposure amount, and by using a heat sagging hardly photosensitive resin, fine in forming the shape of the reflective member having a complicated shape with good accuracy.

  Further, by using the density distribution data (including coordinate data) to control an inkjet pattern forming apparatus, a reflector made of a paste material mainly composed of metal fine particles can be placed at an arbitrary position in the pixel electrode. It can be distributed in any size and in any quantity.

  More specifically, by using a numerical analysis method such as Cell-Dynamical-System model, 1) the total area where the reflector serving as the reflective display unit is disposed and the reflector serving as the transmissive display unit are not disposed. circular the ratio of the total area of the part reaches a desired numerical value, rod, cord-like, or phase separation pattern creation in the creation and density distribution data of shape similar to, 2) a photo of the density distribution data Conversion to mask gradation exposure data 3) Glass blanks for photomasks (HEBS-Glass Photo mask Blanks) using an electron beam or laser drawing device , CANYON MATERIALS Co., Ltd.) 4) Use the gradation exposure photomask, and use the above-mentioned gradation exposure photomask to form a small convex or concave surface consisting of a curved reflecting surface having an inclined surface that changes continuously by photolithography. A light diffusion reflector forms a resin pattern with a desired density and randomly arranged, 5) a conductive layer is formed on the resin pattern, and 6) a nickel thin film transfer plate in which concave portions are randomly arranged by plating. 7) Reflective material treatment on the concave surface of the nickel thin film, 8) Mount the nickel thin film on the transfer drum, and 9) Make a minute pattern under the transparent pixel electrode by the pattern forming apparatus provided with the transfer drum. disorderly distributed-form reflector hemispherical in process consisting, can be manufactured is suitable transcription molds are formed and arranged small reflectors that form under the transparent pixel electrode of the present invention, the mold By using this, it is possible to easily form a transmission / reflection display combined electrode.

  Similarly, using a numerical analysis method such as Cell-Dynamical-System model, 1) The ratio of the total area of the reflector as the reflective display part and the total area of the part other than the reflector as the transmissive display part is desired circular shape having a number, bar-like, string-like, or them creation the creation and density distribution data of the phase separation pattern in the shape of approximation, 2) the density distribution data in the pattern forming apparatus for the discharge pressure of the ink jet method data conversion, 3) using said pattern forming apparatus of an ink jet type, randomly arranged and form a minute hemispherical reflector under the transparent pixel electrodes, the process consisting, under transparent pixel electrode of the present invention It is possible to manufacture a transfer mold for a pattern forming device suitable for placing and forming a minute reflector having a light scattering function and a light reflecting function to be a reflective display portion to be formed. / reflective display combined electrode Can be formed.

  The feature of the transmissive / reflective display combined electrode of the present invention is not only that the reflector having the light scattering function and the light reflecting function can be arranged randomly and at an arbitrary density, but also a numerical analysis method such as a Cell-Dynamical-System model. the concentration distribution pattern can be generated using a suitable gradation exposure photomask for forming a small convex or concave reflector such that the cross-sectional shape becomes a quadratic curve, transfer method and an ink jet system patterning device is that it can be easily manufactured.

  Pattern also to produce a concentration distribution pattern using a numerical analysis method, since can be easily pattern cut at a particular concentration, a mask pattern conforming to the characteristics of the resin to be used (the pattern size and pattern gap, etc.), optionally That is, it is possible to easily manufacture a transfer method and an ink jet method pattern forming apparatus in which the density can be changed.

  Furthermore, a photomask, transfer method, and ink jet method pattern forming apparatus in which the reflectors are arranged randomly and at an arbitrary density using the above-described circular, rod-like, string-like, or phase-separation patterns approximate to them as a guide Can be easily manufactured.

  In particular, features of the present invention, disordered a reflector having an inclined surface that changes continuously, and to place any density, the phase separation which is expressed in the block copolymer, etc. Cell-Dynamical-System Using a numerical analysis method such as a model, a density distribution pattern is generated, and using the density distribution data of this phase separation pattern, a gradation exposure photomask, transfer system, and inkjet system capable of three-dimensional shape control are used. It is easy to produce a pattern forming apparatus.

  Further, according to the present invention, a pattern due to a phase separation phenomenon expressed in a polymer copolymer or the like capable of creating a pattern by computer simulation is used as a pattern for arranging the convex or concave as a reflecting material. Thus, not only coloring due to light interference does not occur, but also the ratio between the transmissive display area and the reflective area in one pixel can be arbitrarily controlled.

  Furthermore, according to the present invention, transfer rolls / plates or gradation exposure photomasks, etc. are produced using phase separation pattern data created by computer simulation, and the projections or depressions that are reflective materials are transferred. By forming by a method, a printing method, a photolithography method, or the like, a low-cost liquid crystal display device can be provided.

  Further, according to the present invention, a pattern in which reflectors that can be arbitrarily controlled by computer simulation can be used as the transfer roll / plate mold or the photomask pattern can be used as the transfer roll / plate mold or the photomask pattern. Low-cost liquid crystal display that can display bright and high-contrast images corresponding to a specific lighting environment by controlling the arrangement direction of the reflectors without changing the cross-sectional shape of the curved reflecting section A device can be provided.

  In addition, formation of the said pattern created by the phase-separation phenomenon expressed with a polymer block copolymer etc. is explained in full detail below.

  (1) numerical method of phase separation which is expressed in high molecular copolymer or high molecular block copolymer (Cahn-Hilliard (-COOK) equation, the time-dependent Ginzburg-Landau equation or Cell-Dynamical-System model ( Using the CDS equation, etc., a desired density distribution pattern and numerical data such as a circle, polygon, bar or string are created.

  (2) The density distribution pattern data created by the numerical analysis method is converted into ink jet pattern forming apparatus data.

  (3) Reflective material having a reflective function with the inkjet pattern forming device (material: silver, silver / palladium / copper alloy, aluminum, titanium, gold and other metals, metal particle diameter: 1 to 20 nm, preferably 2 to 10 nm, viscosity: 1～50Cps, preferably 2～10Cps, surface tension: 1~60dyn / cm, preferably 5~30dyn / cm) with a transparent conductive layer (conductive material: ITO, thickness: 50 The conductivity having a reflection function to be a light diffusing and reflecting element by an ink jet type pattern forming apparatus is convex or concave (diameter: 3 to 15 μm, height (or depth): 0.2 ˜1 μm) is formed, and pixel electrodes for both transmission and reflection, which are electrically connected to each other, are formed.

  Alternatively, the convex or concave (diameter: 3 to 15 μm, height (or depth): 0.2 to 1 μm), which is a reflective material, is formed using a printing method or a transfer method without using an inkjet pattern forming apparatus. for the case of it may be later mentioned above (3) as follows.

  (3) Using the above-mentioned photomask, minute convex or concave (diameter: 3-15 μm, height (or depth): 0.2-1 μm) reflectors with continuously changing inclination angles are randomly arranged. The patterned pattern is formed with a photoresist.

  (4) A pixel electrode made of a transparent conductive layer is formed on the convex or concave (diameter: 3 to 15 μm, height (or depth): 0.2 to 1 μm) formed of a photoresist, and a photolithographic method is used. A nickel thick film is formed on the convex or concave formed with a resist, and the convex or concave (diameter: 3 to 15 μm, height (or depth): 0.2 to 1 μm) formed with a photoresist on the nickel thick film. Transfer the shape.

  (5) Convex or concave (diameter: 3 to 5), which is a reflective material mainly composed of a reflective material (reflecting material: silver, aluminum, gold particles, etc., particle diameter: 1 to 20 nm, preferably 2 to 10 nm) 15 μm, height (or depth): 0.2 to 1 μm) is formed with high accuracy, and the uneven surface of the nickel thick film is subjected to silicon treatment to provide a peeling function.

  (6) A transfer roll in which the nickel layer having a peeling function is wound around a roll or the like is used, and a low-viscosity reflective material (material: silver, silver / palladium / copper alloy) is formed on the concave portion of the transfer roll surface by various coaters or the like. , Metal such as aluminum, titanium, gold, metal particle diameter: 1-20 nm, preferably 2-10 nm, viscosity: 1-50 cps, preferably 2-20 cps, surface tension: 1-60 dyn / cm, preferably 5-30 dyn / cm).

  (7) A pixel electrode composed of a transparent conductive layer (conductive material: ITO, film thickness: 50 to 600 nm, preferably 100 to 300 nm) made of the low-viscosity reflective material filled in the concave portion (or convex portion) of the transfer roll surface. by directly forming the bottom, forming a pixel electrode electrically connected to each other.

    In addition, it has a light reflection function in which convex or concave minute light diffusing reflectors having a continuous inclined surface for condensing incident light in a specific direction are randomly arranged at arbitrary positions and at arbitrary densities. The formation of the conductive material will be described in detail below.

  (1) numerical method of phase separation which is expressed in high molecular copolymer or high molecular block copolymer (Cahn-Hilliard (-COOK) equation, the time-dependent Ginzburg-Landau equation or Cell-Dynamical-System model ( CDS) Using photomasks created using circular, polygonal, rod-like or string-like density distribution pattern data generated by equations, etc.) 1) Light with a continuously changing inclined surface the diffuse reflector disordered, and in any position, arranged in any density, 2) the shape viewed diffuse reflector from above circular, polygonal, rod and string-like or shape similar thereto, these so as to satisfy the condition of equal, the pixel electrode including a transparent conductive layer (material: ITO, thickness: 50 to 600 nm, preferably 100 to 300 nm) under, reflective material (material having a reflective function: silver, silver- alloy of palladium, copper, aluminum, titanium, gold, such as gold Metal particle size: 1 to 20 nm, preferably 2 to 10 nm, the binder: a photosensitive resin, viscosity: 1～50Cps, preferably 2～10Cps, surface tension: 1~60dyn / cm, preferably 5~30dyn / cm) After patterning, any heat treatment (200-250 ° C., time: 30-60 minutes) is applied to the pixel electrode so that the transparent conductive layer or transparent electrode and the conductive material are electrically connected to each other. In this region, a transmissive / reflective display-use electrode is produced that is disordered and arranged to have an arbitrary density.

  (2) numerical analysis method of phase separation which is expressed in high molecular copolymer or high molecular block copolymer (Cahn-Hilliard (-COOK) equation, the time-dependent Ginzburg-Landau equation or Cell-Dynamical-System model ( CDS) Using a photomask formed using circular, polygonal, rod-like or string-like density distribution pattern data generated by the equation etc.) 1) Light having a continuously changing inclined surface Arrange the diffuse reflection elements randomly and in any position at an arbitrary density, and 2) The shape of the diffuse reflection elements as viewed from above satisfies the conditions of circular, polygonal, rod-like and string-like, and the like. A transparent conductive layer (material: ITO, film thickness: 50 to 600 nm, preferably using a polymer sheet for transfer, a transfer roll, a transfer plate, a printing plate, etc. formed with a plurality of formed convexities or depressions, preferably 100 to 300 nm) or a transparent electrode (material: ITO Conductive material (conductive material: silver, aluminum, gold particles, etc.) having a light reflecting function on the film thickness: 50 to 600 nm, preferably 100 to 300 nm, particle diameter: 1 to 20 nm, preferably 2 to 10 nm, viscosity: 1 to 50 cps, preferably 2 to 10 cps) by a transfer method using the transfer roll mold (roll speed: 0.1 to 3 m / min) or a flat plate mold, and further a printing method using the printing plate, etc. After the transfer onto the transparent conductive layer or transparent electrode, heat (200 to 250 ° C., time: 30 to 60 minutes) is applied to electrically connect the transparent conductive layer or transparent electrode and the conductive material to each other. As described above, a transmission / reflection electrode is formed in an arbitrary region corresponding to the pixel electrode so as to be disordered and have an arbitrary density.

  (3) numerical analysis method of phase separation which is expressed in high molecular copolymer or high molecular block copolymer (Cahn-Hilliard (-COOK) equation, the time-dependent Ginzburg-Landau equation or Cell-Dynamical-System model ( CDS) equations, etc.) circular produced by, a polygon, pattern drawing data of the bar-like or by using the string-like density distribution pattern data inkjet method patterning device (XY coordinate values, density values → silver paste discharge pressure) 1) Dispersing the light diffusing and reflecting elements having inclined surfaces that change continuously at random positions and at an arbitrary density 2) The shape of the diffusing and reflecting elements viewed from above is circular, rectangular, rod-like and cord-like or shape similar thereto, so that satisfy the conditions such as these, a transparent conductive layer (material: ITO, thickness: 50 to 600 nm, preferably 100 to 300 nm) or a transparent electrode ( Material: ITO, film : 50-600 nm, preferably 100-300 nm) on a conductive material having a light reflection function (conductive material: silver, aluminum, gold particles, etc., particle size: 1-20 nm, preferably 2-10 nm, binder: photosensitive rESIN, viscosity: 1～50Cps, preferably 2～10Cps, surface tension: 1~60dyn / cm, preferably after drawing a light diffusing reflector directly 5~30dyn / cm), heat (200 to 250 ° C., (Time: 30 to 60 minutes), and the transparent conductive layer or transparent electrode and the conductive material are electrically connected to each other, so that an arbitrary region corresponding to the pixel electrode is disordered and has an arbitrary density. producing an electrode arrangement the transmission / reflection display combined as.

  However, since the present invention does not depend on the liquid crystal driving method, it can be applied to any driving liquid crystal display device such as an active driving method and a passive driving method, and the active driving method transflective liquid crystal display. It is not limited to a device. Further, the transmission / reflection combined electrode of the present invention can be applied to any production method such as a photolithography method, a transfer method, a printing method, and an ink jet method, and is not limited to the production method.

Sectional view of a liquid crystal display device of an active driving method according to the present invention. Detailed view of the pixel electrode of the liquid crystal display device of active drive system according to the present invention. Schematic diagram illustrating a pixel arrangement pattern of the reflector in the liquid crystal display device according to the present invention. The figure which shows another arrangement pattern of the pixel arrangement pattern of the reflector in the liquid crystal display device which concerns on this invention. The figure which shows another arrangement pattern of the in-pixel arrangement pattern of the reflector in the liquid crystal display device which concerns on this invention. Schematic diagram showing the structure of a transflective liquid crystal display device of an active driving method according to the present invention. The figure which shows another cross-section of the liquid crystal display device in the active drive system which disperse | distributed the reflector in the liquid crystal display device which concerns on this invention at random. The figure which shows the cross-sectional structure of the liquid crystal display device in the passive drive system which disperse | distributed the reflector in the liquid crystal display device which concerns on this invention at random. The figure which shows the manufacturing method of the liquid crystal display device in the active drive system which disperse | distributed the disorder | reflector in the liquid crystal display device which concerns on this invention in random order. The figure which shows another manufacturing method of the liquid crystal display device in the active drive system which disperse | distributed the reflector in the liquid crystal display device based on this invention disorderly. The figure which shows the manufacturing method of the liquid crystal display device in the passive drive system which disperse | distributed the disorder | reflector in the liquid crystal display device which concerns on this invention in random order. The figure which shows another manufacturing method of the liquid crystal display device in the passive drive system which disperse | distributed the reflector in the liquid crystal display device which concerns on this invention in random order.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Liquid crystal, 2 ... Spacer, 3, 5 ... Phase difference plate, 4, 6 ... Polarizing plate 10, 20, 60, 70, 80, 90 ... Glass substrate, 11, 61 ... Gate electrode, 11 '... Gate wiring 12, 62 ... gate insulating layer, 13, 63 ... amorphous silicon layer, 14, 64 ... drain electrode, 14 '... drain wiring, 15, 65 ... source electrode, 15' ... source wiring, 16, 66 ... pixel electrode, 17, 67, 82... Reflector (reflective display part made of a conductive material), 17 ′, transmissive display part, 18, 25, 69, 75, 83, 95... Orientation control film, 19. ... Light-shielding layer, 22, 72, 92 ... Colored layer, 23, 73, 93 ... Protective layer, 24, 74, 81, 94 ... Transparent electrode, 30 ... Liquid crystal display element, 40 ... Back light, 41 ... Light source, 42 ... Light guide, 43 ... prism sheet, 44 ... diffusion sheet, 50 ... liquid crystal display device, 5 ... scanning side drive circuit, 52 ... signal side driving circuit, 53 ... signal processing circuit, 68 ... insulating layer, 100 ... dropping device, 110 ... transfer mold, 120 ... film-type

Claims (9)

A plurality of pixels surrounded by a plurality of gate wirings on the substrate and a plurality of source wirings arranged so as to be orthogonal to the gate wirings, and connected to the gate wirings and the source wirings in the pixels; In a liquid crystal display device in which a transmissive display and a reflective display are simultaneously performed by a switching element provided near the intersection of both wirings and a pixel electrode connected to the switching element,
A liquid crystal display device, characterized in that minute reflectors having a light scattering function and a light reflection function are dispersedly arranged below the pixel electrode made of a transparent conductive layer.   The liquid crystal display device according to claim 1, wherein the reflector is disposed directly under the pixel electrode or under an insulating layer disposed under the pixel electrode.   3. The liquid crystal display device according to claim 1, wherein the reflector is dispersedly arranged in the entire region corresponding to the pixel electrode under the pixel electrode or in a specific region.   The liquid crystal display device according to claim 1, wherein the reflectors are randomly distributed.   5. The liquid crystal display device according to claim 1, wherein the reflector has an inclined surface having a convex or concave cross-sectional shape and continuously changing.   The liquid crystal display device according to claim 1, wherein the reflector has a circular shape, a polygonal shape, an elliptical shape, a rod shape, a string shape, or a shape similar to them when viewed from above.   The circular, polygonal, elliptical, rod-like or string-like shape, or the dispersion pattern of the reflector having a shape close to them is a phase separation pattern expressed in a polymer block copolymer, or a pattern approximating it. the liquid crystal display device according to claim 1 to 6, characterized in that.   8. The liquid crystal display device according to claim 1, wherein the reflector is formed of a conductive paste material made of fine silver, silver alloy or gold metal particles, a resin, and a solvent. 9. The liquid crystal display device according to claim 1, wherein the area where the reflector is disposed is a reflective display area, and the other area is a transmissive display area.

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