TWI224183B - Structure for backlight module - Google Patents

Abstract

Disclosed is a structure for backlight module, having a plurality of micro structures on top of a lighting face of a light guiding member, and an optical transforming layer between the lighting face of the light guiding member and a liquid crystal module, in which the optical transforming layer is made of a mixture of a solid powder material and a macromolecule adhesive that is applied to a light transmitting base material, in which the solid powder material consists of at least a luminescent material.

Description

1224183 Case No. 91189914__Year Month and Day_ V. Description of the invention (1) [Technical Field] The present invention relates to the structure of a backlight module, especially a light guide element provided with an optical conversion layer, and the optical conversion layer is dyed. It has a predetermined color and 9-line display. The group displays the line mode poles.} The light and light show the cold electric power. The line source of the moving device is F, such as the light display C — the line crystal C product or liquid or the product is from} Child light. The body electric point structure should be extremely useful for two purposes. The present light should be put on the mold, and the light should be displayed on the C 1 technology. The D 9 light is the technical map of the source light guide technology. If it is used as the backlight before the light is emitted, the tube passes through the light-emitting surface 9 2 2 of the light guide element 9 2 and a diffusion layer 9 4 is combined with a brightness enhancement layer 9 5 on the diffusion layer 9 4. . Because the light guide surface 9 2 1 of the light guide element 9 2 and the reflective layer 9 6 at the bottom thereof can convert a point light source or a linear light source into light emitted from the light emitting surface 9 2 2 to a surface light source of the liquid crystal module 97 The light reaches the diffusing layer 94 and is uniform, and then reaches the brightening layer 95, so that the liquid crystal module 97 can display a backlight of a predetermined color. Known techniques, the backlight color of a general LCD monitor depends on the color emitted by the light source 91. If the backlight of the LCD monitor is to display blue light, a blue light source 9 1 is required, and if the backlight of the LCD monitor is to display orange light Therefore, it is necessary to use an orange light source 9 1. Therefore, in order to have a variety of different backlight colors for electronic products applying this technology, a plurality of different color light sources 9 1 are usually used. For the backlight of the color LCD, it is usually desirable that the backlight is white light to have better brightness. However, considering the high price of white light sources, the light source color is selected to be blue, green, orange, red, etc. In order to reduce costs, optical colors need to be converted into white light.

Page 5 1224183 _ Case No. 91109914 V. Description of the invention (2) Year, month, and month In addition, the light guide element 9 2 of this conventional light guide module 90 is on the light emitting surface 9 2 2 and has only a simple shape. The microstructure 9 2 3 is to make the angle r between the reflective surface 9 2 4 and the light emitting surface 9 2 of the microstructure 9 2 3 too large (as shown in FIG. 9) in order to match the manufacturing technology. The light of 1 is not easy to be concentratedly reflected to the reflective plate 9 6, so that the light reflected from the reflective plate 9 6 to the liquid crystal module 9 7 is reduced, and the displayed brightness is also reduced. [Objective and effect] The main object of the present invention is to solve the above problems and provide a structure of a backlight module. An optical conversion layer is provided on a light guide element, and most light emitting materials are provided in the optical H conversion layer. The optical conversion layer can absorb the backlight and convert it into light of a specific optical color, thereby changing the structure of the backlight module of the backlight display color; because the optical conversion layer can absorb the backlight and convert it to a specific optical wavelength, the optical conversion layer can increase the vertical direction The brightness of the light, while increasing the overall brightness, makes the display element brighter. Another object of the present invention is to provide an angle formed by the outer surface of the microstructure on the light guide element, so that the light emitted by the light source can be guided by the light guide.

The light element is guided in a predetermined direction, so that when the light is reflected, it will not form an improper and biased reflection, and the light guide direction is concentrated to increase the structure of the backlight module. [Technical content] The present invention provides a structure of a backlight module, which has a light guide element made of a light-transmitting substrate. The top of the light guide element has a light emitting surface, and the light emitting surface has most microstructures. , The bottom of the light guide element has a light guide surface, and the light guide element has a light entrance surface on one side, the light guide element

Page 6 1224183 Case No. 9109914 Amendment V. Description of the invention (3) An optical conversion layer material, a polymer binder, and a light-emitting powder are laminated on one of the light-incident surfaces of the light-emitting surface. It is scheduled that this embodiment will be explained differently. [Implement the structure of this implementation. The bottom of the liquid crystal is the group of 10 pieces of 20 microstructures. The most convex surroundings are inclined parallel with respect to the steep surface. 2 Materials to the details of the invention. Of course, but in the attached example, please refer to the structure of the first example. The display of the invention is provided with the bottom and the top 2 11 points 2 1 diagonally extending 5 The steepest surface 2 1 3 is provided with a light source; in addition, The light guide element is composed of a solid powder light-transmitting substrate, wherein the solid is composed of a light-emitting material, and the light-emitting material has the above and other purposes and advantages. It is difficult to gain an in-depth understanding from the following descriptions and drawings. The invention allows optional embodiments in some other parts or arrangements of the other parts, and the structure is shown in detail in this specification. Detailed description] Figure 1 to Figure 4, the ones shown in the figure are selected for the present invention, this is for illustration purposes only, and is not subject to patent applications. The backlight module is set on the back 1 and has a liquid crystal module backlight. Module, the backlight is made of a light-transmitting substrate and has a light-emitting surface 2 1, the microstructure 2 1 1 2, and the microstructure 2, and the microstructure 2 1 1 bump 2 1 2 —side shape 1 3 On one side, a tangent line and a light emitting surface 2 1 light type 10 module light guide element 2 are formed. The light emitting mask has a steeper and slower angle system from the outermost surface 1 1 to the liquid crystal. The liquid crystal has a one-on-one flat display 1, and the crystal module 10 is set on the liquid crystal phase Γ 0 'The light guide element 2 1 has a plurality of glossy surfaces 2 1 furthest convex points 2 1 2 are not mutually tangent to each other The steep surface 2 1 3 and the surface 2 1 4

Page 7 1224183 _ Case No. 91108914 V. Description of the invention (4) Month, month, and date Modification The slow surface 2 1 4 and the light guide surface 2 1/3 are larger than the included angle α, and the microstructures 2 are parallel to each other. In addition, the light guide element light surface 21 2 ′ forms a thick end 2 3 with the light guide element 2 inclined, and a reflective layer 2 5 is provided at the bottom, and a light incident surface 2 6 is provided at the side end of 3 2 6 One side away from the thin end 24 is provided with a source of LED or C light guide element 20 of a specific color. An arc shape is provided on the side. The light guide element 20 is on the light exit surface 2 0. The optical conversion layer 4 0 is a sub-adhesive 4 2. A light-transmitting substrate 4 Material 4 1 is composed of a light-emitting material 4 1 and the optical powder 4 1 2

Si〇2, BaTi03, etc., percentage; In addition, the polymer is bound to amine resin, acrylic resin, polyester tree, rubber, crushed resin, cellulose tree 0 to 90% by weight. The second degree is zero (transparency 100%). It is worth noting that the light-emitting surface has a retarded surface 2 1 4 so that the microstructure 2 1 uses the characteristic that the retarded surface 2 1 4 has a cool angle / 5 smaller than the included angle r, so that The included angle of the guide of the present invention is an included angle α. Each of the tangent lines on the outside surface of the included angle 11 is not 20, and the bottom has an inclined guide 0. The thickness is based on the thin end 2 4 of the light guide surface 2 2. Light guide surface 2 2 The light guide element 20 is at the thick end 2 The light guide element 20 is at the light entrance surface and has a light source 3 0 (light CFL of the present invention), and the light source 30 is far away from the mirror 3 1; The other 1 is superposed with an optical conversion layer 4 composed of a solid powder material 41 and a high score 3. The solid powder 1 and an optical powder 4 1 2 may be mixed with acrylic powder or T i 02 The concentration of 10 to 50% by weight of agent 4 2 may be epoxy resin, polyether resin, polyether resin, halogen-containing resin grease and other molecular resins, and its concentration 2. The light-transmitting substrate 4 3 is Made of a mist of material. 2 1 Most microstructures 2 1 1 have a larger arc on the outer side, and the prior art light guide element 9 2 the top surface light element 2 0

Page 8 1224183 91108914 V. Description of the invention (5) The emitted light is directed to a predetermined direction, and the light does not occur as described in the prior art

The problem that the light of the source is not easy to concentrate can also increase the brightness of the LCD mode display. 、 丄 U In addition, the polymer powder is released by the light of the cloth, the liquid crystal, and the energy released by the light. 0 Display adhesive 4 2 Material 4 1 The optical wavelength of the optical conversion layer at a fixed optical wavelength is released in the form of a light-emitting material line. Module 1 0 light-emitting material 4 1 畺, with the brightness of the next day. The conversion layer 40 is bonded to the light-emitting material 4 and the light distribution is based on a solid and light-transmitting base 1 1 and a specific powder material 4 3 which can absorb the light source material 4 1 and is obtained by collecting and turning 30 again. Make a part directly pass at 40, and 4 1 1 absorbs it, and one special, can convert the shown color 1 absorbed light plus brightness effect into another color, and the light source and the energy can release a In particular, it is necessary to increase the optical wave so that the color will be different. The fixed optical wave plus liquid crystal mode is mixed with the fixed hair change to enable long grouping in some long points. In addition, the light source with human light 3 0 ^ Attachment 1 of the C 1 E chromaticity diagram analysis. The red light segment turns to show a purple backlight in the LCD display, so you must match the source 3 〇 f] f layer j 〇; Similarly, if you want to make the optical conversion layer with blue light display on the display If the backlight is white, it must be matched with the orange field 4 Q 0. Please refer to the first or the PDA screen.... = Z The picture shows that the present invention can be applied to the screen of a mobile phone. The light source 30. Isoelectric = the light guide of the product On the component 20, the process light X can be emitted through the light incident surface 2 6 which is divergent (this example uses a blue LED as an example), and reflected or reflected by the mirror 31 to the light guiding component 2 〇 , The light X is refracted or directed to the light emitting surface 2 1-~ rain 2 1 through the light guide element 2 before the light X passes through the light guide element 2 〇 1224183 case number 91189914 correction color line suction body The external mirror light ο, the changed light 1 light powder} transmissive color shows 3, and the result of this one color scientific display becomes obvious. The source can be changed as time, 4 is not as good as light, and the validity is the same as that of the light meter. Among them, 1 is bright and V is an example. The light increases the D 5 ratio of the brighter that is shown in the figure. The added color display of the good E 3 shows the amount of Y rough 7 two crystal lines on the surface, which is the same as that of the degree orange. There is a pressure color to show that the light can be roughened. 5 If the color of the unity is changed by the movement of the first cloth to change the surface C, you can get the light to drive the light. The table should be made by the system, and it should be equipped with a long-term 2 effect light. On the occasional layer, C merges with another wave of light color, which is effective for double conversion, and studies; 4 fusion 1— ^ the turn of the light show 4 4 light and 4 bright bodies into this group. The powder shape is in the light of the mold. 3 The transformation is special. Y, the crystal is changed from the device and the light to the light. The liquid shows that the color should be light, that is, the light and the light. White light has been released, and the light has been changed. The surface has been changed. After C, it should be transmitted through the bottom of the liquid through 2 to pass through Y. This 1 can be re-colored and therefore over-colored. Wuxianguang X closed at 4 which is the Y change.

Say Hu: # 度 c:; i / nr 羿 照 树 Λ Real Product Example a Real Product Example ύ Reward Example Λ

左左 ㈣_ί \ VQ Sheep E-color LRD back first model _ plus ΰ MEMS optical conversion layer " red from I optical conversion 笮 plus ft installation optical conversion inspection plus self-tight learning conversion layer 8 7 8 ϋ _ 2 8 3 3 UQ 2 0 4 3 2- 2 0 ς Ε Chroma Block 2 3, 4 0 Ύ 3 · [0 0 7 9 2 2 U-2 1 2 Β 3 0 ▲ 2 8 8: 9 4 Q: 2 ϋ 9 〇7 0 ^ 3 S 1 The following table shows the actual products of the present invention. The light source 3 of the three LEDs passes through the backlight module and the optical conversion layer. The driving voltage is 3.5V.

Page 10 1224183 Case No. 91108914 Amendment V. Description of the invention (7) Line color conversion and highlighting 8 1 1 times, its brightness and chromaticity comparison table is as follows: solid example 丨 description 1 flame CIE chromaticity block 缥 ,,, 〇ί / ΙΙΓ τ «-control example β 丨 三 赖 Μ 色 L ϋ 0 backlight chess J 1 ； 4 0-1 3 3 0 * 06 7 f product example β 丨 plus self-learning conversion #-， 丨 17 1 0 2 7 6 0, 2 8 3 The actual product is left over | add the homemade optical conversion layer 2 1 2 1 6 0 ^ 3 2 0 " 〇 * 3 2 3 Ί The actual product is added with the homemade optical conversion layer _ 1 1 8 0-316 _ 0 ^ 3 2 5 7 0-3 7 0 □ 38 4 = In addition) the formed elements 2 1 4 1 2 Crystal module 1 Display module 1 Comprehensive 4 0 Light source 30 and the backlight color line are decoupled to increase the display 1 at Make the display of the hair, the optical surface of the liquid light as much as 0 scattered 0 shows the above, the source 3 0 optical rotation, and with the brightness of the backlight and the liquid crystal with a bright display with a crystal display 1 Z, pass through the powder Body 4 1 2 The scattered light V of the convex part (such as the brightness and the light change layer 40 produced by the light guide of the present invention, and the optical powder 4 is emitted, and the color change function of the internal display 1 will not be reduced. Excellent Optical color exterior In the liquid crystal mode, the light randomly reflects the uniformity in Fig. 7. At the same time, the light element can change the brightness of the light source shown in Fig. 7. At the same time, the power source can be increased (as shown in group 1 0, line Z, and shape) 2 0 Colorless and homogeneous, with a rough surface of 30 degrees and both can increase the display energy 'and sunlight or light illumination, and reach the light guide from most optical powders can be reflected back to the liquid ^ to increase the liquid crystal display but The optical brightness is used to increase the uniformity of more external light rays, so that the backlight can be visually matched with the light-emitting conversion layer and focused on the brightness of the liquid crystal with different light sources.

Page 11 1224183 _ Case No. 91089914 V. Description of the invention (8) The modified light color can reach the required conversion layer to increase the optical brightening effect. The cost of using the diffuser and color conversion film is applied to mobile phones. , PDA and other products. The color of the display, and the invention uses light. In structure, it can really save the expansion. Therefore, when it is used on a backlight device, it can develop commercial value. Based on the above, the light guide with an optical conversion layer made by the invention Components have the following advantages:

1. With optical color conversion function: Because the light conversion element is provided with an optical conversion layer, most of the light-emitting materials are contained in the optical conversion layer, which can absorb the backlight and then convert the light into a specific optical color to achieve the purpose of optical discoloration. 2. Brightening effect: Because the light conversion element is provided with an optical conversion layer, most light emitting materials are mixed or combined in the optical conversion layer, which can increase the brightness of the light in the vertical direction and increase the overall brightness, which can make the display element Achieve brightening effect. The disclosure of the embodiments described above is used to illustrate the present invention, and is not intended to limit the present invention. Therefore, any change in the value or replacement of equivalent components should still belong to the scope of the present invention. From the above detailed description, those skilled in the art can understand that the present invention can indeed achieve the aforementioned purpose, and it has actually met the provisions of the Patent Law, and filed a patent.

Page 12 1224183 _Case No. 91108914_ Year Month Day __ Brief Description of Drawings _ [Simplified Description of Drawings] Figure 1 is a schematic view of the three-dimensional structure of the embodiment of the present invention. -Figure 2 is a three-dimensional schematic diagram of light traveling in the embodiment of the present invention. Figure 3 is a side view of an embodiment of the present invention. FIG. 4 is a schematic diagram of reflection of light on a microstructure according to an embodiment of the present invention. FIG. 5 is a schematic diagram of the color change of the internal light on the optical conversion layer according to the embodiment of the present invention. FIG. 6 is a schematic diagram of brightening an external light on a brightening layer according to an embodiment of the present invention. Figure 7 is the & intent of the color change and brightness enhancement of the light in the optical conversion layer in Figure 6. Fig. 8 is a schematic diagram of a structure in which a conventional light guide element combines a diffusion film and a color changing film. Fig. 9 is a schematic diagram of reflection, discoloration and diffusion of light by a conventional light guide element. [Illustration of drawing number] (conventional part) Light source 9 1 Light guide surface 9 2 1 Brightening layer 9 5 LCD module 9 7

II

Light guide module 9〇 Light guide element 9 2 Light emitting surface 9 2 2 Diffusion layer 9 4 Reflection layer 9 6 Angle T (part of the present invention)

Page 13 LCD module 1 0 Light emitting surface 2 1 Most convex point 2 1 2 Slow surface 2 1 4 Included angle α Thick end 2 3 Reflective layer 2! 5

Reflector 3 1 Solid powder material 4 Optical powder 4 1 2 Light-transmitting substrate 4 3 Discolored light Υ Scattered light V 1224183 _ Case No. 91109914 Schematic illustration of liquid crystal display 1 Light guide element 2 0 Microstructure 2 1 1 Steep surface 2 1 3 Angle / 5 Light guide surface 2 2 Thin end 2 4 Light entrance surface 2 6 Light source 3 0 Optical conversion layer 4 0 Light emitting material 4 1 1 Convex part 4 1 4 Polymer adhesive 4 2 Ray X-ray Z Appendix 1: CI E chromaticity diagram.

Claims (1)

1224183 Case No. 91189914 _η Revision VI. Patent application scope 1 · A backlight light element with most bumps, while the outside of the structure forms a slower surface, angle, and the slower angle system 4 is not faced, in the light-emitting solid , The body is based on the application, the component side. According to the claim, the composition of the powder in the light-receiving surface of the light-receiving surface should be guided by the thickness of the light. The tangent of the steep surface is larger than the first parallel structure, element, and the microstructure is from the tangent planes. The angle between the tangent and the light guide is different. It has a structure with a top and the most convex points. The light guide light guide element has a light incident surface on one side, and a light source is stacked with materials and solid powder on one side of the light guide element, and the bottom of the favorable range element is guided by an optical conversion layer. The molecular adhesive is made of a light-transmitting substrate and has a light-emitting surface. The light-emitting surface has the farthest side of the light-emitting surface extending obliquely to the surrounding and parallel to each other. One side of the side of the most convex point forms a The inflammation angle of the gentle surface is a first included angle and a second included angle. The bottom of each tangent element on the outer surface of the first structure has a light guide. The light guide element is on the conversion layer. The system is composed of a light-transmitting substrate consisting of a slanted light-transmitting substrate. The light-emitting material has a predetermined color. The structure of the backlight module is inclined so as to form a thick end and a thin material. Among them, the structure of the backlight module described in Item 1 of the light guide range, wherein a side away from the light guide element is provided with a Curved mirror. Benefits: The structure of the backlight module described in item 1, wherein the agent is epoxy resin, polyamide resin, acrylic Page 15 of 1224183 _Case No. 91189914_Year_Month__ VI. Patent application resin, polyester resin, polyether resin, halogen-containing resin, rubber, silicon-containing resin, cellulose resin and other polymer resins , Its concentration is 20 to 90% by weight. 5. The structure of the backlight module according to item 1 of the scope of the patent application, wherein the optical powder is one of acrylic powder, Ding i 02, S i 02, Ba T i 03 , Its concentration is 10 to 50% by weight. Page 16