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CN-116148968-B - Cutter, backlight module, light guide plate and preparation method of light guide plate

CN116148968BCN 116148968 BCN116148968 BCN 116148968BCN-116148968-B

Abstract

The invention relates to a cutter, a backlight module, a light guide plate and a preparation method thereof, wherein the cutter comprises a cutter edge, a mounting surface which is opposite to the cutter edge and is used for being in butt joint with impact equipment, and a first connecting surface and a second connecting surface which are used for connecting the cutter edge and the mounting surface, and the first connecting surface and the second connecting surface are opposite; the first connecting surface is connected with the second connecting surface through a third connecting surface and a fourth connecting surface respectively, the third connecting surface and the fourth connecting surface are oppositely arranged, the first connecting surface is an inclined surface inclined towards the direction of the second connecting surface, and the second connecting surface is an inclined surface inclined towards the direction of the first connecting surface. The cutter is used for preparing an inclined slope microstructure, and can be used for preparing the light guide plate with high luminous efficiency and high overall brightness, and the overall optical performance of the light guide plate can be improved by 5% -20%.

Inventors

  • ZHANG HENG
  • FANG ZONGBAO
  • SI QUNYING
  • ZHU LEI
  • FEI XINFENG
  • YU XIAOLONG

Assignees

  • 盐城维旺科技有限公司
  • 苏州维旺科技有限公司
  • 苏州大学

Dates

Publication Date
20260508
Application Date
20211123

Claims (9)

  1. 1. The cutter is used for preparing a highlight microstructure on a light guide plate and is characterized by comprising a cutting edge, a mounting surface, a first connecting surface and a second connecting surface, wherein the first connecting surface and the second connecting surface are used for connecting the cutting edge and the mounting surface; the first connecting surface and the second connecting surface are oppositely arranged; the first connecting surface is connected with the second connecting surface through a third connecting surface and a fourth connecting surface respectively; the third connecting surface and the fourth connecting surface are oppositely arranged, the first connecting surface is an inclined surface inclined towards the direction of the second connecting surface, and the second connecting surface is an inclined surface inclined towards the direction of the first connecting surface; A first inverted surface is formed between the third connecting surface and the second connecting surface, a second inverted surface is formed between the fourth connecting surface and the second connecting surface, the width of the first inverted surface is 3-5 mu m, and the width of the second inverted surface is 3-5 mu m; the first inverted face and the second inverted face are any one of cambered faces or planes.
  2. 2. The tool of claim 1, wherein the angle between the first connecting surface and the mounting surface is 40 ° -80 °, and the angle between the second connecting surface and the mounting surface is 10 ° -40 °.
  3. 3. The tool according to claim 1, wherein the blade has a length of 30-200 μm.
  4. 4. The tool of claim 1, wherein the mounting surface is rectangular in configuration and the angle between the third and fourth connecting surfaces is 10 ° -40 °.
  5. 5. The tool of claim 1, wherein the material of the tool is diamond.
  6. 6. A method of manufacturing a light guide plate, the method comprising: a) Providing a percussion device and a tool, mounting the tool on the percussion device, wherein the tool is a tool according to any one of claims 1 to 5; b) The method comprises the steps of providing a substrate, carrying out relative motion on the cutter and the substrate, forming a plurality of first microstructures on the substrate to obtain a master plate called a female die, and carrying out plate turnover on the master plate to obtain a male die opposite to the master plate, namely a die core, wherein the die core is provided with a plurality of second microstructures; c) Stamping the die core on the substrate to form a region with a plurality of microstructures on the substrate; d) And demolding to obtain the prepared light guide plate.
  7. 7. The method of manufacturing a light guide plate according to claim 6, wherein the microstructure of the surface of the light guide plate is the same as the first microstructure.
  8. 8. A light guide plate, characterized in that the light guide plate is formed by the method for manufacturing a light guide plate according to any one of claims 6 to 7, comprising a body, and a plurality of microstructures formed on the surface of the body.
  9. 9. A backlight module comprising the light guide plate of claim 8.

Description

Cutter, backlight module, light guide plate and preparation method of light guide plate Technical Field The invention relates to a cutter, a backlight module, a light guide plate and a preparation method thereof. Background The light guide plate can change the linear light source or the point light source into a uniform surface light source, specifically, guide the light to the required direction, so that the light reaches the required brightness and uniformity, and a high-quality display picture is obtained. The light guide plate is prepared by using an optical acrylic/PC plate, and then using laser engraving, V-shaped cross grid engraving, UV screen printing and other technologies to prepare light guide points on the bottom of the optical acrylic plate/PC plate. The light emitted from the lamp is absorbed by the optical acrylic plate and stays on the surface of the optical acrylic plate, when the light rays are emitted to each light guide point, the reflected light can be diffused towards each angle, and then the reflection condition is destroyed and emitted from the front surface of the light guide plate. The light guide plate can uniformly emit light through various light guide points with different densities and sizes. The light guide plate adopts a manufacturing process of laser engraving, and a die obtained by laser dotting forms dots with round or other regular patterns on the light guide plate to diffuse light, but the light guide plate with the patterns has isotropic emergent light deflection and divergent emergent light angle, and when the light guide plate is used, the screen brightness is not high and the luminous efficiency is low. Disclosure of Invention The invention aims to provide a cutter, a light guide plate and a backlight module with high luminous efficiency and high overall brightness, and a preparation method for preparing the light guide plate by using the cutter. The cutter is used for preparing a highlight microstructure on a light guide plate and comprises a cutting edge, a mounting surface, a first connecting surface and a second connecting surface, wherein the first connecting surface and the second connecting surface are used for connecting the cutting edge with the mounting surface, the mounting surface and the cutting edge are oppositely arranged and are used for being in butt joint with impact equipment, the first connecting surface and the second connecting surface are oppositely arranged, the first connecting surface is connected with the second connecting surface through a third connecting surface and a fourth connecting surface respectively, the third connecting surface and the fourth connecting surface are oppositely arranged, the first connecting surface is an inclined surface inclined towards the direction of the second connecting surface, and the second connecting surface is an inclined surface inclined towards the direction of the first connecting surface. Further, the included angle between the first connecting surface and the mounting surface is 40-80 degrees, and the included angle between the second connecting surface and the mounting surface is 10-40 degrees. Further, the length of the blade is 30-200 μm. Further, a first inverted surface is formed between the third connecting surface and the second connecting surface, a second inverted surface is formed between the fourth connecting surface and the second connecting surface, the width of the first inverted surface is 3-5 mu m, and the width of the second inverted surface is 3-5 mu m. Further, the mounting surface is of a rectangular structure, and an included angle between the third connecting surface and the fourth connecting surface is 10 degrees to 40 degrees. Further, the material of the cutter is diamond. The invention also provides a preparation method of the light guide plate, which comprises the following steps: a) Providing a percussion device and a cutter, mounting the cutter on the percussion device, wherein the cutter is a cutter as described above; b) The method comprises the steps of providing a substrate, carrying out relative motion on the cutter and the substrate, forming a plurality of first microstructures on the substrate to obtain a master plate called a female die, and carrying out plate turnover on the master plate to obtain a male die opposite to the master plate, namely a die core, wherein the die core is provided with a plurality of second microstructures; c) Stamping the die core on the substrate to form a region with a plurality of microstructures on the substrate; d) And demolding to obtain the prepared light guide plate. Further, the highlighting microstructure is the same as the first microstructure. The invention also provides a light guide plate which is formed by the preparation method of the light guide plate and comprises a body and a plurality of highlight microstructures formed on the surface of the body. The invention also provides a backlight module, which comprises the