TWI333573B - Liquid crystal display - Google Patents

Description

1333573 IX. Description of the Invention: [Technical Field] The present invention relates to a liquid crystal display and particularly relates to a high brightness liquid crystal display. [Prior Art]

In recent years, optoelectronic related technologies have been continuously introduced, and the arrival of the digital era has promoted the vigorous development of the liquid crystal display market. Liquid crystal display (LCD) is widely used in portable TVs, mobile phones, and notebooks because of its high image quality, small size, light weight, low voltage drive, low power consumption, and wide application range. Consumer electronics or computer products such as computers and desktop displays have gradually replaced cathode ray tubes (CRTs) as the mainstream of displays.

The LCD itself does not emit light, so it is necessary to use a backlight module to supply the light source in order to achieve the display effect. Conventional liquid crystal displays are mostly classified into back-light type liquid crystal displays, which mainly include a liquid crystal display panel at the front end and a backlight module at the rear end. The brightness of liquid crystal displays is one of the important considerations in design. Traditionally, the method of increasing the brightness of liquid crystal displays is to increase the aperture ratio or use a brightness enhancement film in the backlight module. However, if the brightness of the liquid crystal display is increased by increasing the aperture ratio, not only the difficulty of the process will be increased, but also the cost burden will be increased. However, if multiple optical films are used in the backlight module to increase the brightness, other problems arise. For example, when light is transmitted (four), the light is not only absorbed by the optical film but reduces the use of light, but also because:

1333573 The burden of material and assembly costs with multiple optical diaphragms. Moreover, these optical films are more likely to cause damage between the optical cymbals when performing the reliability test, thereby increasing the cost burden. Further, if these optical films are not properly arranged, interference fringes are likely to occur, and a moire effect is caused to cause visual defects.

In view of the above, a method for improving the above disadvantages is proposed in U.S. Patent No. 6,421,1,5, which is to form a microlens array on the surface of a glass substrate in a liquid crystal display panel, using a curved surface structure of the microlens. To bring the brightness of the LCD screen. However, the biggest difficulty of this method is that since the size of the microlens is a size below the micrometer level and the surface structure is a curved surface structure, it is not easy to control in fabrication. Moreover, due to the size and structure of the microlens, it is no longer possible to increase the brightness of the liquid crystal display by increasing the curvature of the curved structure of the microlens. Therefore, how to reduce the cost burden and not increase the difficulty of process control at the same time, thereby increasing the brightness of the liquid crystal display, is one of the current research and development priorities.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a liquid crystal display sufficient to produce at least one of the following objectives. SUMMARY OF THE INVENTION It is an object of the present invention to provide a liquid crystal display which can be used to reduce the loss of light due to a light-shielding region and thereby increase the brightness of the liquid crystal display. Another object of the present invention is to provide a liquid crystal display which can effectively reduce the phenomenon of light leakage in the dark state to increase the contrast of the liquid crystal display. Still another object of the present invention is to provide a liquid crystal display which can be reduced

1333573 Less increase in the use of bright film, which in turn reduces the cost burden. According to at least one of the above objects of the present invention, a liquid crystal display device is proposed. The liquid crystal display comprises a backlight, a polymer film layer and a liquid crystal display panel, and the polymer film layer is located under the liquid crystal display panel and above the backlight. Wherein, the polymer film layer has a plurality of concentrating arrays, and each concentrating array comprises a plurality of high refractive index blocks. One of the widest high-refractive-rate blocks is centered, and the remaining high-refractive-index blocks are symmetrically placed on either side of the widest 咼-refractive-index block. And the two high refractive index blocks located at the symmetrical position have the same width, and the high refractive index block is separated by a low refractive index block between the two. The liquid crystal display panel has a plurality of light transmissive regions and a plurality of light shielding regions, each of which is disposed with a light transmissive region, and the light transmissive region is located above the light collecting array in the polymer film layer. Wherein 'high refractive index block and low refractive index area when light passes through each of the concentrating arrays of the polymer film layer and reaches the interface of the high refractive index block and the low refractive index block in the concentrating array A reflection phenomenon is formed on the interface of the block, and the light passing through the concentrating array generates a condensing effect, so that the light is concentrated in the permeable region of the liquid crystal display panel, thereby improving the shell of the liquid crystal display. Therefore, the polymer film layer is not only a light-concentrating film layer having a light collecting effect, but also the light-converging array in the polymer film layer can be regarded as a convex lens having a function of collecting light %. In accordance with a preferred embodiment of the present invention, the width of the high refractive index block on one side of the widest high refractive index block tapers away from the widest high refractive index block. In a preferred embodiment of the present invention, the concentrating array preferably has five high refractive index blocks arranged in order from left to right into a third high refractive index block and a second high refractive index region. a block, a first high refractive index 1333573 block, a second high refractive index block, and a third high refractive index block. The width of the first high refractive index block is greater than the second high refractive index block, and the width of the second high refractive index block is greater than the third high refractive index block. Therefore, the present invention utilizes light to meet the law of refraction (Snell's Law) at the interface of media of different refractive indices, so that when the incident light passes through the interface of the medium of different refractive index, a reflection phenomenon is generated to reflect the light to the liquid crystal display panel. In the permeable area, the use of light due to the loss of light passing through the opaque area is reduced, thereby increasing the use of light. Furthermore, since the size of the high refractive index block in the concentrating array of the present invention is below the micro-nano level, and the arrangement of the high refractive index block is added, when the light passes through the structure of the concentrating array of the present invention In time, the light can be made to collect light to further improve the liquid crystal display. In addition, the method of the present invention can effectively reduce the phenomenon of dark state light leakage to increase the contrast of the liquid crystal display. Moreover, the method of the present invention can not only reduce the number of use of the brightness enhancement film, but also reduce the cost burden. The method of the invention can make the light passing through the low refractive index block have a refraction effect on the interface of the medium with different refractive indexes, so that the light is more effectively concentrated in the light transmissive area, thereby further improving the liquid crystal display. Brightness. [Embodiment] Please refer to FIG. 1A, which is a cross-sectional structural view of a liquid crystal display according to a preferred embodiment of the present invention. In the figure iA, the liquid crystal display 100 sequentially includes a backlight 1〇2, a polymer film layer 1〇8, a first polarizing plate 104, a first transparent substrate 106, a liquid crystal layer 11〇, a color filter ι 2, and a The second transparent substrate 114 and the second polarizing plate 116. The polymer film layer 1333573 108 has a plurality of concentrating arrays 103 ′ and the concentrating array i 〇 3 is composed of a plurality of still refractive index blocks 105 and a plurality of low refractive index blocks 1 〇 7 . The color filter 112 further includes a light-transmitting region 112a and a light-shielding region U2b, and the light-concentrating array 103 is disposed in the light-transmitting region 112a, and the light-transmitting region 112a is located in the polymer film layer 1〇8. Above the concentrating array 1〇3. The surface area of the light-transmitting region 112a 彳 occupies the color filter 112 is preferably equal to the surface area of the concentrating array 103 occupying the polymer film layer 1 〇 8.凊 Referring to Fig. 1B' is a partially enlarged schematic view showing a concentrating array of one of the polymer film layers of Fig. 1A. In FIG. 1B, the concentrating array 1〇3 is composed of a plurality of local refractive index blocks 105 and a plurality of low refractive index blocks IQ?, and the high refractive index block 1〇5 in the concentrating array 103 Interlaced with the low refractive index block 1〇7. Wherein, the high refractive index block 〇5 further includes a first high refractive index block 〇5a, a second high refractive index block 〇5b, and a third high refractive index block 105c, and the first high refractive index The rate block, the second south refractive index block l〇5b, and the third high refractive index block 1〇5c all have the same refractive index. The widths of the first high refractive index block 105a, the second high refractive index block l〇5b and the third high refractive index block 1〇5c are sequentially l丨, [2, and

La, and the width Li of the first high refractive index block 105a is greater than the width L2 of the second high refractive index block 105b, and the width L2 of the second high refractive index block 1 is larger than the third high refractive index block. 1〇5c width Ls. In a preferred embodiment of the present invention, the width ratio of the first high refractive index block 1〇5a, the second high refractive index block secret and the third high refractive index block 敝 is preferably 9:4M, but Not limited to this. Referring again to the figure (7), the second high refractive index block and the second south refractive index block 1G5e are sequentially symmetrically arranged in the first high refractive index region.

10 1333573 The two sides of the block l〇5a, that is, the arrangement of the high refractive index block 105 in the concentrating array 1〇3 is sequentially arranged from left to right into a third high refractive index block l〇5c, second The horse refractive index block l〇5b, the first high refractive index block i〇5a, the second high refractive index block 105b, and the third high refractive index block 105c. The preferred material of the polymer film layer 108 is a polymer material, and the preferred thickness thereof is between 5 em and 300 / / m. The preferred refractive index of the high refractive index block ι 5 is between 1.4 and 1.8. The refractive index of the low refractive index block is preferably between about 1.2 and 1.55. In addition, in a preferred embodiment of the present invention, the refractive index of the first polarizing plate 104 is preferably greater than the refractive index of the high refractive index block 1〇5 in the polymer dielectric layer 108 to further improve the light. The usage rate is not intended to limit the scope of the invention. In another preferred embodiment of the present invention, as shown in FIG. 2, the polymer film layer 108 may be disposed under the first transparent substrate 丨〇6 and above the first polarizing plate 104. To limit the scope of the invention. The preferred material of the polymer film layer 108 and the high refractive index block 105 and the low refractive index block 107 in the concentrating array 1〇3 are arranged in the same manner as the polymer film layer 1 of the above preferred embodiment. 8, so I will not repeat them here. Referring to FIG. 3A, there is shown a cross-sectional structural view of a liquid crystal display according to still another preferred embodiment of the present invention. In FIG. 3A, the liquid crystal display 300 sequentially includes a backlight 302, a first polarizing plate 304, a first transparent substrate 306, a concentrating array 303, a liquid crystal layer 310, a color filter 312, a second transparent substrate 314, and The second polarizing plate 316. The concentrating array 303 is composed of a plurality of high refractive index blocks 3〇5a, 3〇51), 3〇5c, and the high refractive index block 305 is disposed on one surface of the first transparent substrate 3〇6. And adjacent to one side of the first polarizing plate 304. The color filter 312 further includes a light-permeable region 312a and a light-shielding region 312b. Each of the light-concentrating arrays 303 is disposed with a light-transmitting region 312a, and the light-transmitting region 312a is located in the light-concentrating array 303. Above. Please refer to FIG. 3B, which is a partially enlarged schematic view of a concentrating array on the first transparent substrate in FIG. 3A. In Fig. 3B, the south refractive index block 305 in the concentrating array 303 further includes a first high refractive index block 305a, a second still refractive index block 305b, and a third high refractive index block 305c. The widths of the first high refractive index block 305a, the second high refractive index block 3〇5b and the third high refractive index block 305c are sequentially ρ^Ρ2, and P3, and the first high refractive index block 305a The width P1 is greater than the width P2 of the second high refractive index block 3〇5b, and the width Pa of the second high refractive index block 3〇5b is greater than the width Pa of the third high refractive index block 305c. The second high refractive index block 3〇5b and the third high refractive index block 305c are symmetrically arranged on both sides of the first high refractive index block 3〇5a, that is, the high refractive index in the concentrating array 303 The arrangement of the blocks 3〇5 is from the left to the right, the third high refractive index block 3〇5c, the second high refractive index block 305b, the first high refractive index block 3〇5a, and the second high refractive index. The rate block 3〇5b and the third high refractive index block 3〇5c. Preferably, the high refractive index block 305 is a polymer material and is refracted south. The refractive index of the block 3G5 is larger than that of the first transparent substrate, and the refractive index of the refractive index block 305 is better. It is between about 14 and i8, and the refractive index of the first transparent substrate 306 is preferably between about i 2 and 丨Μ. The thickness of the above-mentioned 咼 refractive index block 3〇5 is preferably between 5# claws and 3〇〇^rn, but is not intended to limit the scope of the invention. Or, as shown in FIG. 4, which is a preferred embodiment of the present invention; a partially enlarged top view of the concentrating array in the transparent substrate is further

12 1333573 A plurality of concentrating arrays 403 having a cross-arranged high refractive index block 405 may be selectively disposed in a surface of one of the first transparent substrates 406. The 'concentrating array 403' is composed of a plurality of high refractive index blocks 405, and the arrangement of the high refractive index blocks 405 is arranged in a cross shape. The high refractive index block 405 further includes first, second, third, fourth, and fifth

The high refractive index block 405a, ..., 405e 'the first high refractive index block 405a is located at the center of the concentrating array 403, and the second high refractive index block 4 〇 5b and the third high refractive index block 405c are sequentially Arranged symmetrically on both sides of the first high refractive index block 405a along the X direction, and the fourth high refractive index block 4〇5d and the fifth intermediate refractive index block 405e are sequentially arranged symmetrically along the γ direction. A side of a high refractive index block 405a. Each of the concentrating arrays 4 〇 3 is disposed in a light transmissive area (not shown) of the liquid crystal display, and the light permeable area is disposed above the concentrating array 403 .

In Fig. 4A, the length and width of the above-mentioned first high refractive index block 4〇5& are h, and k!, respectively. The lengths of the second high refractive index block 405b and the third high refractive index block 4〇5c symmetrically arranged along the χ direction are both h′′ and the first high refractive index block 4〇5& The length h is equivalent, and the widths of the second same refractive index block 4G5b and the third high refractive index block 4() 5e are k2 and k3, respectively. Wherein, the width of the first high refractive index block 4〇5a is greater than the width k2 of the second high refractive index block 4〇5b, and the width k2 of the second high folding (four) block 4〇5b is greater than the third high refractive index. The width of the block 4〇5c is 匕. The fourth high refractive index block symmetrically arranged along the Y direction and the width of the fifth high refractive index block 405e are both ki's and the width of the first high refractive index block is equal to k宽度And the fourth high refractive block 4 (four) and the fifth high refractive index block her length are respectively .... Wherein, the length of the first high-definition 13 丄川 573 irradiance block 405a is greater than the length of the fourth high-refractive-index block 钧 "the length hz' of the fourth high-refractive-index block 4 〇 5d is greater than the The length h3 of the five high refractive index block 405e. In addition, as shown in FIG. 4B, the concentrating array is respectively disposed in the first transparent substrate and the second transparent substrate according to a preferred embodiment of the present invention. A partially enlarged plan view of the divergent light array may further include a plurality of concentrating arrays 403 having a cross-type array of high refractive index blocks 405 in one surface of the first transparent substrate 406, and simultaneously on the second transparent substrate 414. One of the surfaces is provided with a divergent light array 413 having a cross-shaped array of low refractive index blocks 415 to further improve the brightness and viewing angle of the liquid crystal display. Among the plurality of low refractive index blocks 415 in the divergent light array 413 Preferably, the arrangement corresponds to the arrangement of the high refractive index blocks 4〇5 in the concentrating array 403, and the size of the low refractive index block 415 in the divergent light array 413 is preferably higher than that in the concentrating array 403. Size of the refractive index block 4〇5 The refractive index of the high refractive index block 405 is greater than the refractive index of the first transparent substrate 406, and the refractive index of the low refractive index block 415 is smaller than the refractive index of the second transparent substrate 414. In a preferred embodiment, as shown in FIG. 5, a concentrating array 503' having a low refractive index block 5〇7 may be selectively disposed in combination with the light transmissive region 512a and disposed below the light shielding region 512b. The refractive index block 507 is not limited to the scope of the present invention, wherein the low refractive index block 507 in the concentrating array 503 is arranged symmetrically from the center of the concentrating array 503 to the left and right sides and each The distance between the low refractive index blocks 507 is different from X!, X2, and X3', that is, the pitch Χι is greater than the pitch X2, and the pitch X2 is greater than the pitch X3. 1333573 The present invention uses light in different refractive index media. The interface needs to meet the law of refraction (Snell's Law). When the incident light passes through the interface of the medium with different refractive indices, the reflection phenomenon is generated to reflect the light into the light transmissive area of the liquid crystal display panel, thereby improving the light utilization rate. Please refer to FIGS. 6 and 7 for a partial enlarged view of a high refractive index block in the concentrating array on the first transparent substrate in FIG. 3A. In FIG. 6, the refraction of the high refractive index block 305 The rate is m, the refractive index of the first transparent substrate 306 is n2, the contact interface between the south refractive index block 305 and the first transparent substrate 306 is the contact surface 307, and the incident angle is 0, and the refraction angle is high therein. The refractive index η of the refractive index block 305 is larger than the refractive index of the first transparent substrate 3〇6. Therefore, 'According to the law of refraction (Snell's Law) (1): ηι X sin0 ! = n2 X sin 6> 2 ( \ ) When the incident light 301 enters the first transparent substrate 306 (saturated medium) by the high refractive index block 305 (density medium), the refraction angle Θ2 is greater than the incident angle 01. If the refraction angle 6»2 is equal to 90°, the refracted light 3〇9 will occur on the contact surface 3〇7. At this time, the incident angle 0 丨 is called the critical angle of total reflection. Therefore, the formula of refraction law (1) can be rewritten as: Θ c= sin'^ n2/ n〇( 2) Therefore, it can be known from equation (2) that when the incident angle is greater than the critical angle of total reflection 0C, total reflection occurs. The phenomenon, as shown in Fig. 7, produces a reflected ray 309 on the contact surface 3〇7. Furthermore, since the size of the high refractive index block in the concentrating array of the present invention is below the micro-nano level, and the arrangement of the high-refractive-index blocks in the concentrating array is added, when the light passes through the present invention When the structure of the concentrating array is configured, the light can be concentrated to improve the liquid crystal display.

15 1333573 Brightness. Referring again to FIG. 3B, the size of the high refractive index block 305 in the concentrating array 303 is below the micron level. The second high refractive index block 3〇讣 and the third high refractive index block 305c are sequentially symmetrically arranged on both sides of the first high refractive index block 305a and are located at two positions of the second high refractive index at the symmetrical position. The block 305b and the two second higher refractive index blocks 3〇5c have the same widths P2 and P3, respectively. The width P1 of the first high refractive index block is greater than the width P2' of the second high refractive index block. The width P2 of the second high refractive index block is greater than the width P3 of the third high refractive index block. Therefore, when the light ray 301 passes through the concentrating array 3 〇 3, not only the reflected light 309 is generated on the contact surface 307, but also the reflected light 309 is caused to condense the light □ to further increase the brightness of the liquid crystal display. Therefore, the concentrating array 303 can be regarded as a convex lens having a condensing function. Please refer to Figure 3A again, and refer to Figure 3B at the same time. First, the light projected by the backlight 302 enters the first polarizing plate 3〇4. Then, after the incident light 301 passes through the concentrating array 303, a reflected ray 309' is generated on the contact surface 307 and the reflected ray 309 produces a condensing effect. Then, the light 309 passes through the first transparent substrate 306, and sequentially enters the liquid permeable layer 312a, the second transparent substrate 314, and the second polarizing plate 316 in the liquid crystal layer 31 and the color filter 312. More specifically, the present invention utilizes light to meet the law of refraction (Snell's Law) at the interface of media of different refractive indices, so that when the incident light passes through the interface of the medium of different refractive index, a reflection phenomenon is generated to reflect the light to The liquid bb is not visible in the opaque region 312a of the panel to reduce the light loss caused by the light-shielding region 312b passing through the color light-receiving sheet 312, thereby increasing the light usage rate and at the same time improving the brightness of the liquid crystal display. Furthermore, since the size of the high refractive index block 3 () 5 in the 16 concentrating array 303 of the present invention is below the micron level, plus the second high refractive index block 305b and the first in the concentrating array. The three high refractive index blocks 305c are symmetrically arranged on both sides of the first high refractive index block view, so when the light ray 301 passes through the concentrating array 3() 3 _, the light 309 can be made to condense the function 'to further Improve the brightness of the liquid crystal display stomach. In addition, as shown in FIG. 3A, the method of the present invention allows the incident light 3〇la passing through the first transparent substrate 3〇6 having a lower refractive index to be generated on the interface of the medium having different refractive indexes. The effect of refraction causes the light rays 3〇9a to concentrate more effectively on the light-permeable region 312a to further increase the brightness of the liquid crystal display. Hereinafter, the manufacturing method of the high refractive index block in the preferred embodiment of the present invention will be described in detail, but the manufacturing method is not intended to limit the scope of the present invention. The manufacturing method is clear with reference to FIGS. 8A to 8D. The structure of the process for fabricating a polymer film layer on a transparent substrate according to a preferred embodiment of the present invention is not intended. A transparent substrate 6〇2 is provided in Fig. 8A. Next, a polymer film layer 604 is formed on the transparent substrate 6〇2 in Fig. 8B. The above method of forming the polymer film layer 604 is preferably a spin coating method, but is not intended to limit the scope of the invention. Subsequently, the polymer film layer 604 is exposed by the photomask 606 and the ultraviolet light 608 in FIG. 8C to form a concentrating array 6〇3 as shown in FIG. 8D, wherein the concentrating array 603 is composed of plural The high refractive index blocks 6〇5 and 1333573 are composed of a plurality of low refractive index blocks 607. The polymer film layer 604 described above obtains the high refractive index block 605 and the low refractive index block 607 having different refractive indexes by controlling the exposure time and the exposure intensity. In this way, the fabrication of the concentrating array can be completed on the transparent substrate. Alternatively, in another preferred embodiment of the present invention, the polymer film layer may be formed on the polarizing plate such that the polarizing plate has a high refractive index block and a low refractive index block, but is not limited thereto. The scope of the invention. • Manufacturing Method 2 Referring to Figures 9 through 9, there is shown a schematic view of a process for fabricating a concentrating array on a transparent substrate in accordance with another preferred embodiment of the present invention. In Fig. 9, a transparent substrate 7〇2 is provided, and a photoresist layer 7〇4 is formed on the transparent substrate 702. Next, in the ninth drawing, the light and resist layer 704 is subjected to a lithography process to form a patterned photoresist 7〇6. In Fig. 9C, the transparent substrate 7〇2 not covered by the patterned photoresist 7〇6 is etched to form grooves 7〇8 having different widths on the transparent substrate 702. Wherein, the groove 708 is provided with a light transmissive area (not shown) of the color filter. The patterned photoresist 706 is then removed. In Fig. 9D, a polymer material 71 is formed by spin coating in the recess 708 and over the transparent substrate 7〇2. The refractive index of the polymer material 71 〇 ^ is greater than the refractive index of the transparent substrate 702. Next, the polymer material 71 is irradiated with ultraviolet light to harden the polymer material 71. In the drawing, an etching process and a polishing process are performed to form a flat surface on the surface of the transparent substrate 7〇2 while forming the concentrating array 7 (10). The concentrating array 703 is composed of first, second and third high refractive index blocks 18 1333573 705a, 705b and 705c. In this way, the fabrication of the concentrating array 703 can be completed on the transparent substrate. Alternatively, as shown in Fig. 9F, a plurality of concentrating arrays 703 of low refractive index blocks 7 〇 7 may be formed on the transparent substrate 702 as needed, but are not intended to limit the scope of the invention. Among them, the distance between the low refractive index blocks 707 is different. Manufacturing Method 3 φ Referring to FIGS. 1 to 1D, a schematic structural view of a process for fabricating a high refractive index block on a transparent substrate according to still another preferred embodiment of the present invention is shown. In FIG. 1A, a photoresist layer (not shown) is formed on the transparent substrate 802, and then the photoresist layer is subjected to a lithography process to form a patterned photoresist 804. In Fig. 10B, the etching is not a patterned photoresist 8〇4. The covered transparent substrate 802' is such that grooves 806 having different widths are formed on the transparent substrate 802. The groove 806 is provided with a light transmissive area (not shown) of the color filter. Subsequently, the patterned photoresist 8 〇 4 is removed. φ In the 10Cth view, an adhesive layer 810 is coated on the polarizing plate 808. The material of the adhesive layer 810 is preferably a polymer material, and the thickness of the adhesive layer 810 is preferably between 2" and "out". The refractive index of the adhesive layer 810 is greater than the refractive index of the transparent substrate 8〇2. Then, as shown in Fig. 10D, the polarizing plate 8A8 is adhered to the transparent substrate 802 through the adhesive layer 81. In this way, the fabrication of the concentrating array 803 can be completed on the transparent substrate 8〇2*. Among them, the concentrating array "03 is composed of the first, second and third high refractive index blocks 8〇5a, 8〇5b and 8〇5c. Alternatively, a plurality of low refractions can be formed on the transparent substrate as needed.

1333573 A concentrating array of rate blocks, but is not intended to limit the scope of the invention. Among them, the distance between the low refractive index blocks is different. It will be apparent from the above-described preferred embodiments of the present invention that the application of the present invention has the following advantages. The liquid crystal display of the invention not only can reduce the light loss caused by passing through the light shielding area, but also can concentrate the light field distribution, thereby improving the brightness of the liquid crystal display. Furthermore, the method of the present invention allows the light to produce a condensing function to further increase the brightness of the liquid crystal display. Moreover, the method of the present invention can effectively reduce the phenomenon of dark state light leakage to increase the contrast of the liquid crystal display device. In addition to this, the method of the present invention can not only reduce the number of use of the brightness enhancing film, but also reduce the cost. The method of the invention can make the light passing through the low refractive index block have a refraction effect on the interface of the medium with different refractive indexes, so that the light is more effectively concentrated in the light transmissive area, so as to further improve the liquid crystal. The brightness of the display. The present invention has been described above in terms of a preferred embodiment, and is not intended to limit the invention, and various modifications and changes may be made without departing from the spirit and scope of the invention. Therefore, the scope of protection of the present invention is subject to the definition of the scope of the patent application. BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, advantages and embodiments of the present invention will become more <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; A schematic cross-sectional view of a liquid crystal display according to a preferred embodiment of the present invention is shown. The figure is a partially enlarged schematic view of a concentrating array in the polymer film layer of Fig. 1A. 20 1333573 Figure 3B is a partially enlarged schematic view of the concentrating array on the first transparent substrate of Figure 3A. Figure 4A is a partially enlarged plan view showing a concentrating array in a first transparent substrate in accordance with a preferred embodiment of the present invention. FIG. 4B is a partially enlarged plan view showing a concentrating array and a diverging light array respectively disposed in the first transparent substrate and the second transparent substrate according to a preferred embodiment of the present invention. Figure 5 is a schematic view showing the structure of a liquid crystal display in accordance with a preferred embodiment of the present invention. Figures 6 and 7 are partial enlarged views of one of the high refractive index blocks in the concentrating array on the first transparent substrate in Fig. 3A. 8A to 8D are schematic structural views showing a process of fabricating a polymer film layer on a transparent substrate in accordance with a preferred embodiment of the present invention. 9A to 9E are schematic structural views showing a process of fabricating a concentrating array on a transparent substrate in accordance with another preferred embodiment of the present invention. Figure 9F is a schematic view showing the structure of a concentrating array formed on a transparent substrate in accordance with a preferred embodiment of the present invention. 10A to 10D are schematic views showing the steps of a process for fabricating a high refractive index block on a transparent substrate in accordance with still another preferred embodiment of the present invention. [Description of main component symbols] 100, 300, 500: liquid crystal display 103, 303, 403, 503, 603, 21 1333573 102, 302, 502: backlights 104, 304, 504: first polarizing plates 106, 306, 406, 506: first transparent substrate 108: polymer film layer 110, 310, 510: liquid crystal layer 112a, 312a, 512a: light transmissive regions 114, 314, 414, 514: second transparent substrate 105b, 305b, 405b, 705b, 805b: second high refractive index block 301, 301a: incident light 307: contact surface 405d: fourth high refractive index block 413: divergent light array 415b: second low refractive index block 415d: fourth low refractive index region Blocks 602, 702, 802: transparent substrate 608: ultraviolet light 704: photoresist layer 708, 806: groove 808 · polarizing plate hi, h2, h3: length, L2, L3: width Xl, X2, X3: pitch Θ i: incident angles 703, 803: concentrating arrays 105, 305, 405 '605: high refractive index blocks 107, 415, 507, 607, 707: low refractive index blocks 112, 312, 512 · color filters 112b, 312b, 512b: light shielding regions 116, 316, 516: second polarizing plates 105a, 305a, 405a, 705a, 805a: first high refractive index region 105c, 305c, 405c, 705c, 805c: third high refractive index block 309, 309a: light 405e: fifth high refractive index block 415a: first low refractive index block 415c: third low refractive index block 415e : fifth low refractive index block 604: polymer film layer 606: photomask 706, 804: patterned photoresist layer 710: polymer material 810: adhesive layer ki, k2, k3: width p!, p2, P3: Width ηι, n2 : refractive index 0 2 : refraction angle

Claims (1)

1333573 2〇fe 7f 13th | Rui Weng Zheng Ben 10, the scope of application for patents: -- h A liquid crystal display of still brightness, the liquid crystal display comprises: a backlight; - a first polarizing plate, disposed above the backlight; a first transparent substrate disposed on the first polarizing plate; a plurality of concentrating arrays disposed in a surface of the first transparent substrate φ and adjacent to one surface of the first polarizing plate, each of the concentrating lights The array includes: a first high refractive index block; and a plurality of second yttrium refractive index blocks symmetrically disposed on the two sides of the first high refractive index block and at the symmetrical positions The blocks have the same width, and the first high refractive index block and the second high refractive index blocks are a low refractive index block, and the first still refractive index block and the second The refractive index of the high refractive index block is greater than the refractive index of the low refractive index block, and the width of the first high refractive index block is larger than the second high refractive index block, and the first high refractive index is located The second high refractive index blocks on one side of the block The second transparent substrate is disposed on the first transparent substrate, and has a plurality of light transmissive regions corresponding to the concentrating arrays; The layer is disposed between the first transparent substrate and the second transparent substrate; and a second polarizing plate is disposed on the second transparent substrate. 23 [SI] The liquid crystal display of the first aspect of the invention, wherein the second refractive index block and the second high refractive index block are one high score. The liquid crystal display of claim 1, wherein the refractive index of the second refractive index block and the second high refractive index block are between M and 1.8. 4. The liquid crystal display of claim 1, wherein the low refractive index block has a refractive index of between 1.2 and 1.55. The liquid crystal display of claim 1, wherein the thickness of the first refractive index block and the second high refractive index block are between $Vm and 3〇〇m between. 6. A liquid crystal display, comprising: a backlight; a molecular film layer disposed on the backlight, the polymer film layer having a plurality of concentrating arrays, each of the concentrating arrays comprising: a first high refractive index block; and a plurality of second south refractive index blocks, the two second high refractive index blocks symmetrically arranged on both sides of the first high refractive index block and located at a symmetrical position The same width 'the first high refractive index block: the second high refractive index block is a low refractive index block between the two, the second ] 5] 24 1333573 July 2010 丨 3 曰 corrected replacement page The refractive index of the same refractive index block and the second high refractive index block is greater than the refractive index of the low refractive index block, and the width of the first high refractive index block is larger than the second high refractive index regions a block, the width of the second high refractive index blocks located on the first high-amplitude block-side is gradually reduced toward a direction away from the first high-refractive-index block; and a liquid crystal display panel disposed at the Above the polymer film layer, the liquid crystal = display panel has a plurality Permeable costly and the plurality of light transmitting regions positioned above the plurality of lines converging arrays of the high molecular film layers. 7. The liquid crystal display of claim 6, wherein the refractive index of the first high refractive index block and the second high refractive index block is between 1.4 and 1.8. 8. The liquid crystal display of claim 6, wherein the low refractive index block has a refractive index of between 1.2 and 1.55. The liquid crystal display of claim 6, wherein the high molecular layer has a thickness of between 3 Å/zm. A concentrating film layer for use in a liquid crystal display, characterized in that the concentrating film layer has a plurality of concentrating arrays, each of the concentrating arrays comprising a plurality of high refractive index blocks and Wherein, the widest high-refractive-index block is placed in the center, and the other of the south-refractive-index blocks are symmetrically arranged on the two sides of the widest high-refractive-index block and located at two positions in the symmetric position. Having the same width 'the high refractive index blocks between the two are a low refractive index LSI 25 1333573 July 2010 丨 3 曰 modified replacement page block, the refractive index of the high refractive index block is greater than The refractive index of the low refractive index block is located on the side of the widest high refractive index block, and the widths of the high refractive index blocks are gradually reduced toward the direction away from the widest high refractive index block. The light array is configured corresponding to a plurality of light transmissive regions in the liquid crystal display. 11. The concentrating film layer of claim 10, wherein the material of the concentrating film layer is a polymer material. The concentrating film layer of claim 10, wherein the refractive index of the bismuth refractive index block is between 1.4 and 1.8. 13. The concentrating film layer of claim 10, wherein the low refractive index block has a refractive index between 1.2 and 1.55. 14. The concentrating film layer as described in claim 10, wherein the thickness of the concentrating film layer is between 5 and 300 m. m 26