CN106773318B - Display device - Google Patents

Display device Download PDF

Info

Publication number
CN106773318B
CN106773318B CN201710040920.XA CN201710040920A CN106773318B CN 106773318 B CN106773318 B CN 106773318B CN 201710040920 A CN201710040920 A CN 201710040920A CN 106773318 B CN106773318 B CN 106773318B
Authority
CN
China
Prior art keywords
backlight
light source
light
display device
substrate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201710040920.XA
Other languages
Chinese (zh)
Other versions
CN106773318A (en
Inventor
陈昱超
廖烝贤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AU Optronics Corp
Original Assignee
AU Optronics Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AU Optronics Corp filed Critical AU Optronics Corp
Publication of CN106773318A publication Critical patent/CN106773318A/en
Application granted granted Critical
Publication of CN106773318B publication Critical patent/CN106773318B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133621—Illuminating devices providing coloured light
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133626—Illuminating devices providing two modes of illumination, e.g. day-night

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Planar Illumination Modules (AREA)

Abstract

The invention provides a display device, which comprises a display panel, a backlight module and a control module. The backlight module is arranged on one side or the back side of the display panel and used for providing backlight required by the display of the display panel, the backlight module comprises a first light source and a second light source, the light generated by the first light source in a first time period in a picture frame has a peak at the wavelength of 320nm to 420nm, the light generated by the second light source in a second time period in the picture frame has a peak at the wavelength of 420nm to 480nm, and the control module is used for controlling the first light source to be started in the first time period and controlling the second light source to be started in the second time period. The invention can improve the penetration efficiency and the color saturation of the display device by controlling the first light source and the second light source to be alternately switched on and off.

Description

Display device
Technical Field
The present invention relates to a display device, and more particularly, to a display device with improved color saturation.
Background
In the current color filter of TFT-LCD panel, the metal-containing photosensitive pigment is used as the material for color display. In terms of color and optical performance, the existing CF has poor color rendering and low color purity due to too wide emission spectrum; while increasing the film thickness can improve the color saturation, it also reduces the transmittance of the entire panel.
Quantum dots (Quantum dots) are photoluminescent materials that absorb light from a backlight and then re-emit light, nanocrystals (nanocrystals) with diameters equal to or less than about 10 nanometers (nm) are semiconductor materials that produce denser light in a narrower wavelength band and have high stability compared to conventional photosensitive pigments. The quantum dots have the function of converting wavelength, so the quantum dots can be placed in the optical filter to replace the original color resistance. Therefore, how to use the quantum dots together with the backlight source to achieve a wide color gamut and improve the transmittance is one of the important points that the skilled person focuses on.
Disclosure of Invention
The invention provides a display device, which is used for improving the color saturation and the transmittance of the display device.
The invention discloses a display device which comprises a display panel, a backlight module and a control module. The backlight module is arranged on one side or the back side of the display panel and used for providing backlight required by the display of the display panel, the backlight module comprises a first light source and a second light source, the light generated by the first light source in a first time period in a picture frame has a peak at the wavelength of 320nm to 420nm, the light generated by the second light source in a second time period in the picture frame has a peak at the wavelength of 420nm to 480nm, and the control module is used for controlling the first light source to be started in the first time period and controlling the second light source to be started in the second time period.
In summary, the present invention controls the first light source (UV light source) and the second light source (blue light source) to be alternately turned on and off, so as to control the transmittance and the color saturation of the display device, and improve the problem of the color saturation reduction caused by the blue light leakage caused by the single UV light source or the single blue LED light source.
The foregoing summary of the invention, as well as the following detailed description of the embodiments, is provided to illustrate and explain the principles and spirit of the invention, and to provide further explanation of the invention as claimed.
Drawings
Fig. 1 is a cross-sectional view of a display device according to an embodiment of the invention.
Fig. 2 is a cross-sectional view of a display device according to another embodiment of the invention.
Fig. 3 is a schematic diagram of a display device according to another embodiment of the invention.
Fig. 4A is a cross-sectional view of the display device according to the embodiment of fig. 3.
Fig. 4B is a cross-sectional view of the display device according to the embodiment of fig. 3.
Fig. 5 is a schematic diagram of a display device according to another embodiment of the invention.
Description of the symbols:
100 to 300 display device
500 display device
10 display panel
20 backlight module
40 backlight module
50 control module
110 first substrate
120 thin film transistor layer
130 display medium
140 color filter layer
140a first wavelength conversion layer
140b second wavelength conversion layer
140c third wavelength conversion layer
140x backlight penetration layer
150 second substrate
160 UV light blocking layer
CL1, CL2, BL light
Detailed Description
The detailed features and advantages of the present invention are described in detail in the following embodiments, which are sufficient for anyone skilled in the art to understand the technical content of the present invention and to implement the present invention, and the related objects and advantages of the present invention can be easily understood by anyone skilled in the art from the disclosure of the present specification, the claims and the drawings. The following examples are intended to illustrate aspects of the present invention in further detail, but are not intended to limit the scope of the invention in any way, and the invention is further described in the following description with reference to the drawings.
The term (terms) used throughout the specification and claims has the ordinary meaning as commonly understood in the art, in the context of this invention, and in the specific context in which it is used, unless otherwise indicated.
FIG. 1 is a schematic diagram of a display device 100 according to an embodiment of the present invention. As shown in fig. 1, the display device 100 includes a display panel 10 and a backlight module 20, in the embodiment, the backlight module 20 is disposed on a back side of the display panel 10 (such as a direct-type backlight shown in fig. 1), but the invention is not limited thereto, and the backlight module 20 may also be disposed on a side of the display panel 10 (such as a side-type backlight). The display panel 10 includes a first substrate 110, a thin film transistor layer 120, a display medium 130, a color filter layer 140, and a second substrate 150. In the present embodiment, the backlight module 20 includes a UV light source capable of generating ultraviolet light, and generally, a light spectrum generated by the UV light source has a peak at a wavelength of 320nm to a wavelength of 420 nm. The color filter layer 140 includes a first wavelength conversion layer 140a, a second wavelength conversion layer 140b, and a third wavelength conversion layer 140 c. The first wavelength conversion layer 140a includes a red quantum dot material for absorbing ultraviolet light to excite red light, the second wavelength conversion layer 140b includes a green quantum dot material for absorbing ultraviolet light to excite green light, and the third wavelength conversion layer 140c includes a blue quantum dot material for absorbing ultraviolet light to excite blue light. The display medium 130 has a characteristic of adjusting light flux, for example, liquid crystal molecules. In the embodiment, the ultraviolet light is utilized to excite the quantum dot material to have the advantages of high light penetration efficiency and high color saturation.
However, when ultraviolet light is used as a backlight, the display medium 130 may be subjected to the ultraviolet light for a long time and thus may be deteriorated more rapidly. On the other hand, since blue quantum dot materials are not readily available, production costs may be increased.
Fig. 2 is a schematic diagram of another embodiment of a display device 200 according to the present invention. As shown in fig. 2, the display device 200 includes the display panel 10 and the backlight module 30, and in the embodiment, the backlight module 30 may be configured as described above, which is not repeated herein. The display panel 10 includes a first substrate 110, a thin film transistor layer 120, a display medium 130, a color filter layer 140, and a second substrate 150. In the present embodiment, the backlight module 30 includes an LED light source capable of generating blue light, and generally, the light spectrum generated by the blue light has at least one peak at a wavelength of 420nm to 480 nm. The color filter layer 140 includes a first wavelength conversion layer 140a, a second wavelength conversion layer 140b, and a backlight transmissive layer 140 x. The first wavelength conversion layer 140a includes a red quantum dot material for absorbing blue light to excite red light, the second wavelength conversion layer 140b includes a green quantum dot material for absorbing blue light to excite green light, and the backlight transmissive layer 140x may be a transparent photoresist or a non-photoresist for transmitting blue light emitted from the backlight source. The present embodiment still has the advantage of higher light transmission efficiency by using the blue LED light source to excite the quantum dot material, and can improve the problems of the display medium degradation caused by the UV light source and the blue quantum dot material being difficult to obtain.
However, when the blue LED light source is used as a backlight, the blue light cannot be completely converted into red light and green light when passing through the red quantum dot material or the green quantum dot material, and thus the blue light leaks through the first wavelength conversion layer 140a and the second wavelength conversion layer 140b, which causes a problem of color saturation reduction.
Fig. 3 is a schematic diagram of another embodiment of a display device 300 according to the present invention. As shown in fig. 3, the display device 300 includes the display panel 10, the backlight module 40 and the control module 50, and in the embodiment, the configuration of the backlight module 40 may be as described above, which is not repeated herein. The backlight module 40 includes a first light source 301a and a second light source 301b, and the control module 50 is electrically connected to the first light source 301a and the second light source 301 b. The light ray CL1 generated by the first light source 301a has a peak at a wavelength of 320nm to 420nm for emitting UV light; the light CL2 generated by the second light source 301b has at least one peak at a wavelength of 420nm to 480nm for emitting blue light. The display frame period can be divided into a first time interval and a second time interval, wherein the first time interval and the second time interval can be partially overlapped or completely not overlapped. The control module 50 controls the first light source 301a to be turned on at a first time interval, so that the light ray CL1 of the UV light generated by the backlight module 40 enters the display panel 10, and the control module 50 controls the second light source 301b to be turned on at a second time interval, so that the light ray CL2 of the blue light generated by the backlight module 40 enters the display panel 10, and during a display frame, the first light source 301a and the second light source 301b are turned on alternately in a time sequence, so that the display device 300 is in a low-leakage blue light mode at the first time interval, so that the display panel 10 has high color saturation, and is in a no-UV light mode at the second time interval, so that the display panel 10 can be prevented from being degraded.
Further illustrating the method of operation of the low leakage blue mode and the UV-free light mode of the embodiment of fig. 3. Referring to fig. 4A and 4B, the display panel 10 of fig. 4A includes a first substrate 110, a thin film transistor layer 120, a display medium 130, a color filter layer 140, and a second substrate 150. The color filter layer 140 includes a first wavelength conversion layer 140a, a second wavelength conversion layer 140b, and a backlight transmissive layer 140 x. The first wavelength conversion layer 140a includes a red quantum dot material for absorbing the backlight BL to emit red light, the second wavelength conversion layer 140b includes a green quantum dot material for absorbing the backlight BL to emit green light, and the backlight transmissive layer 140x is a transparent photoresist or no photoresist for transmitting the backlight BL emitted from the backlight source. In the first period, the control module 50 controls the first light source (UV light source) 301a to be turned on and the second light source (blue light source) 301b to be turned off. The light CL1 (i.e., UV light) generated by the first light source 301a emits red light R and green light G through the first wavelength conversion layer 140a and the second wavelength conversion layer 140b, respectively, and in order to prevent the UV light from directly passing through the backlight transmissive layer 140x to damage human eyes, a UV-cut layer 160 may be disposed on the second substrate 150.
Please refer to fig. 4B. In the second period, the control module 50 controls the second light source (blue light source) 301b to be turned on and turns off the first light source (UV light source) 301 a. The light ray CL2 (i.e., blue light) generated by the second light source 301B emits red, green and blue light R, G and B, respectively, through the first, second and third wavelength- conversion layers 140a, 140B and 140 x.
Further, the length of the first time interval and the second time interval can be adjusted according to the user's requirement, for example, when the first time interval is adjusted to be greater than the second time interval, the display device has the effect of high saturation.
Fig. 5 is a schematic diagram of another embodiment of a display device 500 according to the present invention. As shown in fig. 5, the display device 500 includes a display panel 10 and a backlight module 40, and the difference between the present embodiment and the display device 400 of fig. 4A and 4B is that the Color Filter layer 140 of the display device 500 is disposed between the first substrate 110 and the display medium 130, that is, the Color Filter on array (COA) architecture is used to match the timing backlight module 40.
In summary, the display device of the present invention uses the time-ordered backlight module to control the alternate switching between the UV light and the blue light, so as to control the penetration efficiency and the color saturation of the display device, and improve the problem of the color saturation reduction caused by the blue light leakage caused by the single UV light source or the single blue LED light source.
Although the present invention has been described with reference to particular embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (8)

1. A display device, comprising:
a display panel;
a backlight module set on one side or back side of the display panel for providing a backlight required by the display panel, the backlight module includes:
a first light source generating light having a peak at a wavelength of 320nm to a wavelength of 420nm at a first time period during a frame; and
a second light source generating light having at least one peak at a wavelength of 420nm to 480nm at a second time period during the frame period; and
a control module electrically coupled to the first light source and the second light source for controlling the first light source to be turned on during the first period of time and the second light source to be turned on during the second period of time,
wherein the first time period and the second time period partially overlap or do not overlap at all,
wherein, during the frame, the first light source is turned off outside the first period, and the second light source is turned off outside the second period.
2. The display device of claim 1, wherein the display panel comprises:
a first substrate;
a second substrate disposed on one side of the first substrate; and
and the color filter layer is arranged between the first substrate and the second substrate and comprises a first wavelength conversion layer, a second wavelength conversion layer and a backlight penetrating layer.
3. The display device as claimed in claim 2, wherein the first wavelength conversion layer comprises red quantum dot material for absorbing the backlight to excite red light, the second wavelength conversion layer comprises green quantum dot material for absorbing the backlight to excite green light, and the backlight transmissive layer is used for transmitting the backlight emitted from the backlight source.
4. The display device of claim 3, wherein the display panel further comprises a UV light blocking layer disposed over the second substrate.
5. The display device of claim 1, wherein the display panel comprises:
a first substrate;
a second substrate; and
the color filter layer is arranged between the first substrate and a display medium and comprises a first wavelength conversion layer, a second wavelength conversion layer and a backlight penetrating layer.
6. The display device as claimed in claim 5, wherein the first wavelength conversion layer comprises red quantum dot material for absorbing the backlight to excite red light, the second wavelength conversion layer comprises green quantum dot material for absorbing the backlight to excite green light, and the backlight transmissive layer is used for transmitting the backlight emitted from the backlight source.
7. The display device of claim 6, wherein the display panel further comprises a UV light blocking layer disposed over the second substrate.
8. The display device according to any one of claims 2 to 6, wherein the first period of time is greater than the second period of time.
CN201710040920.XA 2016-10-18 2017-01-17 Display device Active CN106773318B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW105133556 2016-10-18
TW105133556A TWI588574B (en) 2016-10-18 2016-10-18 Display device

Publications (2)

Publication Number Publication Date
CN106773318A CN106773318A (en) 2017-05-31
CN106773318B true CN106773318B (en) 2020-03-20

Family

ID=58944801

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710040920.XA Active CN106773318B (en) 2016-10-18 2017-01-17 Display device

Country Status (2)

Country Link
CN (1) CN106773318B (en)
TW (1) TWI588574B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI698843B (en) * 2018-11-27 2020-07-11 友達光電股份有限公司 Display panel
CN115373208A (en) * 2021-05-19 2022-11-22 胜智会科技顾问股份有限公司 Display structure with laser wavelength conversion layer

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103680420A (en) * 2013-09-05 2014-03-26 友达光电股份有限公司 Display device
CN104091571A (en) * 2014-06-30 2014-10-08 京东方科技集团股份有限公司 Display system
CN104133320A (en) * 2014-08-20 2014-11-05 深圳市华星光电技术有限公司 Color liquid crystal display module structure and backlight module thereof
CN104854652A (en) * 2012-12-03 2015-08-19 夏普株式会社 Display device and television reception device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100064862A (en) * 2008-12-05 2010-06-15 삼성에스디아이 주식회사 Liquid crystal display device
JP2015102857A (en) * 2013-11-28 2015-06-04 富士フイルム株式会社 Light conversion member, backlight unit, liquid crystal display device, and method for manufacturing light conversion member
CN105202483A (en) * 2014-06-20 2015-12-30 业鑫科技顾问股份有限公司 Backlight module and display device
JP6305319B2 (en) * 2014-11-14 2018-04-04 富士フイルム株式会社 Wavelength conversion member, backlight unit including the same, liquid crystal display device, and method for manufacturing wavelength conversion member
CN104409592A (en) * 2014-11-26 2015-03-11 京东方科技集团股份有限公司 LED (light emitting diode), light guide plate, backlight module and display device
CN105911766A (en) * 2016-06-16 2016-08-31 青岛海信电器股份有限公司 Quantum dot light-emitting device, backlight module and liquid crystal display device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104854652A (en) * 2012-12-03 2015-08-19 夏普株式会社 Display device and television reception device
CN103680420A (en) * 2013-09-05 2014-03-26 友达光电股份有限公司 Display device
CN104091571A (en) * 2014-06-30 2014-10-08 京东方科技集团股份有限公司 Display system
CN104133320A (en) * 2014-08-20 2014-11-05 深圳市华星光电技术有限公司 Color liquid crystal display module structure and backlight module thereof

Also Published As

Publication number Publication date
TW201816486A (en) 2018-05-01
TWI588574B (en) 2017-06-21
CN106773318A (en) 2017-05-31

Similar Documents

Publication Publication Date Title
US7746423B2 (en) Photo-luminescent liquid crystal display including a blue dichroic mirror layer
US10068949B2 (en) Display panel
US9658381B2 (en) Backlight module and liquid crystal display including same
TWI503812B (en) Display
US9885822B2 (en) Display device
US20180143491A1 (en) Liquid Crystal Display Device and Liquid Crystal Display Module Thereof
WO2017041345A1 (en) Liquid crystal display
CN104865749A (en) Optical diaphragm set, backlight module and liquid crystal display
JP2006301632A (en) Photoluminescence liquid crystal display
US20050104076A1 (en) Flat panel energized by blue LED for generating white light
KR102096436B1 (en) Backlight assembly and liquid crystal display including the same
JP7043618B2 (en) Backlight modules, display devices, display device drive methods, electronic devices and computer readable storage media
JP2007025621A (en) Color display unit
KR20070070052A (en) Liquid crystal display
US9535282B1 (en) Quantum dot nano crystal LCD backlight system and related method
KR20170000444A (en) Liquid crystal display apparatus
US20060109398A1 (en) Dark state light recycling film and display
CN106773318B (en) Display device
US9570014B2 (en) Field sequential color liquid crystal display device and color control method thereof
WO2016090719A1 (en) Field sequential color liquid crystal display device and driving method thereof
WO2017201774A1 (en) Backlight module and liquid crystal display device
WO2019019570A1 (en) Quantum dot liquid crystal panel and liquid crystal display device
CA3048465C (en) Display device using micropillars and method therefor
KR20110058195A (en) Liquid crystal display device
KR20160080486A (en) Light emitting diode package and backlight unit including the same

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant