CN109765724A - A kind of liquid crystal display die set and mobile terminal - Google Patents
A kind of liquid crystal display die set and mobile terminal Download PDFInfo
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- CN109765724A CN109765724A CN201910199513.2A CN201910199513A CN109765724A CN 109765724 A CN109765724 A CN 109765724A CN 201910199513 A CN201910199513 A CN 201910199513A CN 109765724 A CN109765724 A CN 109765724A
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- liquid crystal
- crystal display
- die set
- fingerprint
- backlight
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Abstract
It includes: liquid crystal display, backlight, driving circuit and fingerprint photosensitive unit that the present invention, which provides a kind of liquid crystal display die set and mobile terminal, the liquid crystal display die set,；The fingerprint photosensitive unit is arranged between the backlight and the liquid crystal display；The driving circuit drives at least partly liquid crystal particle of the liquid crystal display to be in light transmission state.The embodiment of the present invention solves the problems, such as that fingerprint identification region is limited, improves the range of fingerprint recognition.
Description
Technical field
The present invention relates to technical field of liquid crystal display more particularly to a kind of liquid crystal display die set and mobile terminals.
Background technique
With the development of mobile terminal, most of mobile terminal all realizes fingerprint identification function.Current most of movements
Fingerprint recognition mould group is usually arranged in terminal at one end, to realize fingerprint identification function.Screen ratio is accounted in order to improve, it is existing mobile whole
Fingerprint recognition mould group is arranged below display screen at end.Since the photosensitive region of fingerprint recognition mould group is limited, fingerprint recognition
Region is limited.
Summary of the invention
The embodiment of the present invention provides a kind of liquid crystal display die set and mobile terminal, to solve mobile terminal fingerprint identification region
Limited problem.
In a first aspect, the embodiment of the invention provides a kind of liquid crystal display die sets, comprising: liquid crystal display, backlight, drive
Dynamic circuit and fingerprint photosensitive unit；
The fingerprint photosensitive unit is arranged between the backlight and the liquid crystal display；
The driving circuit drives at least partly liquid crystal particle of the liquid crystal display to be in light transmission state.
Second aspect, the embodiment of the invention also provides a kind of mobile terminal, the mobile terminal includes liquid crystal display mode
Group and control chip, which includes: liquid crystal display, backlight, driving circuit and fingerprint photosensitive unit；
The fingerprint photosensitive unit is arranged between the backlight and the liquid crystal display；
The driving circuit drives at least partly liquid crystal particle of the liquid crystal display to be in light transmission state.
The embodiment of the present invention is led to by the way that fingerprint photosensitive unit is arranged between the backlight and the liquid crystal display
It crosses fingerprint photosensitive unit and carries out the acquisition of finger print data, to realize the lower fingerprint identification function of screen.Due to fingerprint photosensitive unit
Small volume, can any position between backlight and liquid crystal display be configured, in this way can be in liquid crystal display
Any region realize fingerprint recognition.Therefore, the embodiment of the present invention solves the problems, such as that fingerprint identification region is limited, improves finger
The range of line identification.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, needed in being described below to the embodiment of the present invention
Attached drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention,
For those of ordinary skill in the art, without any creative labor, it can also obtain according to these attached drawings
Take other attached drawings.
Fig. 1 is one of the structural schematic diagram of liquid crystal display die set that one embodiment of the invention provides；
Fig. 2 is the second structural representation for the liquid crystal display die set that one embodiment of the invention provides；
Fig. 3 is the light channel structure figure for the liquid crystal display die set that one embodiment of the invention provides；
Fig. 4 is the first area formed in the mobile terminal of one embodiment of the invention offer by touch location and second area
Schematic diagram.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, those of ordinary skill in the art's acquired every other implementation without creative efforts
Example, shall fall within the protection scope of the present invention.
Unless otherwise defined, technical term or scientific term used in the present invention are should be in fields of the present invention
The ordinary meaning that personage with general technical ability is understood." first ", " second " used in the present invention and similar word
It is not offered as any sequence, quantity or importance, and is used only to distinguish different component parts.Equally, "one" or
The similar word such as " one " does not indicate that quantity limits yet, but indicates that there are at least one." connection " or " connected " etc. are similar
Word is not limited to physics or mechanical connection, but may include electrical connection, it is either direct or between
It connects."upper", "lower", "left", "right" etc. are only used for indicating relative positional relationship, when the absolute position for being described object changes
Afterwards, then the relative positional relationship also correspondingly changes.
Referring to figs. 1 to Fig. 2, the embodiment of the invention provides a kind of liquid crystal display die set, which includes: liquid
Crystal display screen 101, backlight 102, driving circuit (not shown) and fingerprint photosensitive unit 103；
The fingerprint photosensitive unit 103 is arranged between the backlight 102 and the liquid crystal display 101；
The driving circuit drives at least partly liquid crystal particle of the liquid crystal display 101 to be in light transmission state.
Specifically, above-mentioned fingerprint photosensitive unit 103 can be set to multiple, and multiple fingerprint photosensitive units 103 are equal
Even interval setting, so as to realize full frame fingerprint recognition, or the region realization fingerprint recognition that part is specified.In an optional reality
It applies in example, above-mentioned each fingerprint photosensitive unit 103 can be distributed in matrix form.
It should be understood that all or part of liquid crystal particle that above-mentioned driving circuit can control liquid crystal display 101 is in light transmission
State.Those skilled in the art is it should be understood that the corresponding display area of liquid crystal particle under light transmission state is in
Light transmission state, the display area are correspondingly provided with one or more fingerprint photosensitive unit 103.That is it is correspondingly arranged on fingerprint
The liquid crystal particle in at least partly region of photosensitive unit will be in light transmission state.
In the embodiment of the present invention, when carrying out fingerprint recognition, liquid crystal display can be driven at least by driving circuit
Partial liquid crystal particle is in light transmission state, in this way, after the light of backlight 102 is through the liquid crystal molecule of liquid crystal display, if by
User's finger is blocked, it will is reflected light, and is received by fingerprint photosensitive unit 103, to realize fingerprint recognition
Function.
The embodiment of the present invention between the backlight 102 and the liquid crystal display 101 by being arranged the photosensitive list of fingerprint
Member 103, and by the acquisition of the progress finger print data of fingerprint photosensitive unit 103, to realize the lower fingerprint identification function of screen.Due to referring to
The small volume of line photosensitive unit, can any position between backlight and liquid crystal display be configured, in this way can be with
Fingerprint recognition is realized in any region of liquid crystal display.Therefore, the embodiment of the present invention solves what fingerprint identification region was limited
Problem improves the range of fingerprint recognition.
It should be noted that polaroid can be arranged in the incident side and light emission side of liquid crystal display 101 under normal conditions.
As shown, the liquid crystal display die set further includes set on the polaroid 104 between the backlight and the liquid crystal display；
Specifically, the position of above-mentioned fingerprint photosensitive unit 103 can be configured according to actual needs there are in the case where polarisation 104.
For example, in an alternative embodiment, the fingerprint photosensitive unit 103 be set to the backlight 102 and the polaroid 104 it
Between；In another alternative embodiment, the fingerprint photosensitive unit 103 is set to the polaroid 104 and the liquid crystal display 101
Between.In the present embodiment, above-mentioned polaroid 103 is down polaroid, can also be arranged in the light emission side of liquid crystal display 101 upper inclined
Mating plate (not shown).
In the present embodiment, as shown in Figure 1, if fingerprint photosensitive unit 103 is arranged in above-mentioned polaroid 104 and backlight
When between 102, then it is not necessarily to change the assembly technology of existing polaroid 104 and liquid crystal display 101, is easy to implement liquid crystal display mode
The assembly of group.
As shown in Fig. 2, if being arranged fingerprint photosensitive unit 103 between above-mentioned polaroid 104 and liquid crystal display 101,
Interference of the polaroid 104 to reflection light can be reduced, to improve signal-to-noise ratio, therefore the accurate of fingerprint recognition can be improved
Degree.
Specifically, the light of backlight 102 can be incident on liquid crystal after polaroid 104 when carrying out fingerprint recognition
It in display screen 101, and is projected from the light emission side of liquid crystal display 101, if light will pass through in light emission side there are user's finger
User's finger reflects, to be obtained by fingerprint photosensitive unit 103, to obtain the finger print data of user's finger.By fingerprint number
After being output to corresponding finger prints processing chip, fingerprint identification function can be realized.
Further, based on the above embodiment, in the present embodiment, above-mentioned liquid crystal display die set further includes glass cover-plate 105,
The glass cover-plate 105 is located at the light emission side of the liquid crystal display 101, and with 101 company of being adhesively fixed of liquid crystal display
It connects.
The shape of above-mentioned glass cover-plate can be configured according to actual needs, not further herein to be limited, due to
It is provided with glass cover-plate in the light emission side of liquid crystal display 101, therefore avoids liquid crystal display 101 and is contacted with the external world, thus
Improve the safety that liquid crystal display 101 uses.
Further, when the fingerprint photosensitive unit 103 is set between the backlight 102 and the polaroid 104,
The liquid crystal display die set further include be arranged the fingerprint photosensitive unit thin film transistor (TFT) (Thin Film Transistor,
TFT) glass substrate 106, the TFT glass substrate 106 are and described between the polaroid 104 and the backlight 102
Fingerprint photosensitive unit is bonded with the polaroid 104.
Due to being provided with fingerprint photosensitive unit 103, so that TFT glass substrate 106 is local transparent, and aperture opening ratio is not
High (about 80%), has certain influence to display brightness, in the present embodiment, can be appropriate in order to keep original display brightness
Increase the brightness of backlight 102.
It should be noted that because backlight 102 is scattering light, may photosensitive generation to fingerprint photosensitive unit 103 it is larger
Fingerprint photosensitive unit 103, in an alternative embodiment, can be done reverse side light shield, and do and reduce in each fitting lamination by interference
Reflection processing, such as add plating anti-reflection film mode.
Further, the embodiment of the invention also provides a kind of mobile terminal, which includes in above-described embodiment
Liquid crystal display die set.The structure of the liquid crystal display die set is specifically referred to above-described embodiment, and details are not described herein.Due to
Mobile terminal in the present embodiment uses above-mentioned liquid crystal display die set, therefore mobile terminal provided in an embodiment of the present invention is same
Beneficial effect with above-mentioned liquid crystal display die set whole.
Further, in the present embodiment, the driving circuit in the liquid crystal display die set drives liquid crystal display 101
First area at least partly liquid crystal particle is in light transmission state.
Specifically, the region that the first area can touch for user's finger, or be the complete of the liquid crystal display 101
Portion display area, it is not further herein to be limited.
Further, above-mentioned first area includes the first subregion and the second subregion being arranged alternately, the driving electricity
Road drives the liquid crystal particle in first subregion to be in light transmission state, and the liquid crystal particle of second subregion is in impermeable
Light state.
Due to being alternatively formed the first subregion and the second subregion, so as to realize light transmission and lighttight gap.This
The technical staff in field is it is understood that the corresponding position of above-mentioned first subregion in this way may be used equipped with fingerprint photosensitive unit 103
To realize fingerprint identification function.It is arranged alternately the first subregion and lighttight second subregion of light transmission, so as to pass through
Second subregion shields diffusing reflection light, to realize the single-geophone receiver of reflection light.Therefore fingerprint can be improved in the present embodiment
The accuracy of identification.
It is illustrated so that above-mentioned first area is the region that user's finger touches as an example.For example, in Fig. 3, above-mentioned first
Region can be a rectangular area or an elliptical region, and the liquid crystal particle of above-mentioned first subregion is located in the first area,
And the distance of the fingerprint photosensitive unit 103 apart from corresponding position is less than preset value.As shown in figure 3, above-mentioned first area includes two
A first subregion, each subregion are correspondingly provided with one or row's fingerprint photosensitive unit 103；Due to controlling the photosensitive list of fingerprint
Liquid crystal particle near member 103 is in light transmission state, thereby may be ensured that target fingerprint photosensitive unit normally receives and passes through hand
The light of digital reflex.In addition, the liquid crystal particle of the second subregion of control is in non-transparent state, so as to pass through the second sub-district
The liquid crystal particle in domain shields diffusing reflection light 2, in this manner it is achieved that the single-geophone receiver of reflection light, and then imaging is calculated, it improves
The accuracy of fingerprint recognition.
Further, please with reference to Fig. 4, based on the above embodiment, in the present embodiment, if the first area 401 is
The region that user's finger touches, the liquid crystal particle of driving circuit driving second area 402 are in impermeable light state, and described the
Two regions 402 are the display area that the distance between described first area 401 is less than preset value.
In the present embodiment, above-mentioned second area 402 can be arranged around first area 401, such as second area can be big
It causes to be in track type.Above-mentioned preset value determines the width of second area, and specific size can be configured according to actual needs herein
It is not further to be limited.The liquid crystal particle of above-mentioned second area is in being horizontally disposed with, so as to prevent the light of backlight saturating
It crosses.Since the liquid crystal particle in control second area 402 is in impermeable light state, so as to avoid the light of second area 402
Line has an impact the reflection light of finger, therefore improves the accuracy of fingerprint recognition.
It should be noted that the mobile terminal further includes backlight drive module, in the shifting in an alternative embodiment
Dynamic terminal is under breath screen state, and the backlight in liquid crystal display die set described in the backlight drive module drive is in the shape that shines
State.
In the present embodiment, mobile terminal can realize fingerprint recognition in the case where ceasing screen state, can also be real under bright screen state
Existing fingerprint recognition.In order to better understand the present invention, the Scene realization fingerprint recognition different with bright screen two is shielded below by way of breath
Process be described in detail.
In one embodiment, if mobile terminal is in breath screen state, realize that fingerprint recognition process is as follows:
Step 1, user's finger touch screen；
Step 2, judge user's finger touch location, while lighting backlight；
Step 3, the liquid crystal deflection for driving liquid crystal display, passes light through liquid crystal display, is incident on user's finger surface；
Step 4, fingerprint photosensitive unit receives the reflection light by user's finger reflection；
Step 5, fingermark image is calculated；
Step 6, judge whether it is qualified fingerprint.
In another embodiment, if mobile terminal is in bright screen state, realize that fingerprint recognition process is as follows:
Step 1, user's finger touch screen；
Step 2, judge user's finger touch location；
Step 3, the liquid crystal deflection for driving liquid crystal display, passes light through liquid crystal display, is incident on user's finger surface；
Step 4, fingerprint photosensitive unit receives the reflection light by user's finger reflection；
Step 5, fingermark image is calculated；
Step 6, judge whether it is qualified fingerprint.
It should be understood that can be carried out fingerprint recognition if it is full frame, then without judging user's finger touch location.
More than, only a specific embodiment of the invention, but scope of protection of the present invention is not limited thereto, and it is any to be familiar with
Those skilled in the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all cover
Within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (12)
1. a kind of liquid crystal display die set characterized by comprising liquid crystal display, backlight, driving circuit and the photosensitive list of fingerprint
Member；
The fingerprint photosensitive unit is arranged between the backlight and the liquid crystal display；
The driving circuit drives at least partly liquid crystal particle of the liquid crystal display to be in light transmission state.
2. liquid crystal display die set according to claim 1, which is characterized in that the liquid crystal display die set further includes being set to institute
State the polaroid between backlight and the liquid crystal display；The fingerprint photosensitive unit is set to the backlight and the polarisation
Between piece or between the polaroid and the liquid crystal display.
3. liquid crystal display die set according to claim 2, which is characterized in that when the fingerprint photosensitive unit is set to the back
When between light source and the polaroid, the liquid crystal display die set further includes the thin film transistor (TFT) that the fingerprint photosensitive unit is arranged
TFT glass substrate, the TFT glass substrate is between the polaroid and the backlight, and the fingerprint photosensitive unit
It is bonded with the polaroid.
4. liquid crystal display die set according to claim 1, which is characterized in that the fingerprint photosensitive unit is multiple.
5. liquid crystal display die set according to claim 4, which is characterized in that multiple fingerprint photosensitive unit uniform intervals
Setting.
6. liquid crystal display die set according to claim 1, which is characterized in that the liquid crystal display die set further includes glass cover
Plate, the glass cover-plate are located at the light emission side of the liquid crystal display, and are adhesively fixed and connect with the liquid crystal display.
7. a kind of mobile terminal, which is characterized in that including liquid crystal display die set described in any one of claims 1 to 6.
8. mobile terminal according to claim 7, which is characterized in that the driving circuit driving in the liquid crystal display die set
The first area of liquid crystal display at least partly liquid crystal particle is in light transmission state.
9. mobile terminal according to claim 8, which is characterized in that the first area is the area that user's finger touches
Domain, or whole display areas for the liquid crystal display.
10. mobile terminal according to claim 9, which is characterized in that the first area includes first be arranged alternately
Subregion and the second subregion, the driving circuit drive the liquid crystal particle in first subregion to be in light transmission state, institute
The liquid crystal particle for stating the second subregion is in impermeable light state.
11. mobile terminal according to claim 9, which is characterized in that if the first area is what user's finger touched
Region, the liquid crystal particle of driving circuit driving second area be in impermeable light state, and the second area is with described the
The distance between one region is less than the display area of preset value.
12. mobile terminal according to claim 7, which is characterized in that the mobile terminal further includes backlight drive module,
The mobile terminal is under breath screen state, and the backlight in liquid crystal display die set described in the backlight drive module drive is in
Luminance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910199513.2A CN109765724B (en) | 2019-03-15 | 2019-03-15 | Liquid crystal display module and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910199513.2A CN109765724B (en) | 2019-03-15 | 2019-03-15 | Liquid crystal display module and mobile terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109765724A true CN109765724A (en) | 2019-05-17 |
| CN109765724B CN109765724B (en) | 2022-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910199513.2A Active CN109765724B (en) | 2019-03-15 | 2019-03-15 | Liquid crystal display module and mobile terminal |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110687720A (en) * | 2019-09-05 | 2020-01-14 | 深圳市德仓科技有限公司 | Backlight module, display screen and terminal |
| CN110865479A (en) * | 2019-11-28 | 2020-03-06 | 维沃移动通信有限公司 | Display device and electronic apparatus |
| WO2021017188A1 (en) * | 2019-07-26 | 2021-02-04 | 武汉华星光电技术有限公司 | Display panel control system and display panel control method |
| WO2021139760A1 (en) * | 2020-01-10 | 2021-07-15 | 京东方科技集团股份有限公司 | Display apparatus having fingerprint recognition function |
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| US20170124372A1 (en) * | 2015-10-30 | 2017-05-04 | Essential Products, Inc. | Fingerprint sensors for mobile devices |
| CN106940488A (en) * | 2017-04-27 | 2017-07-11 | 上海天马微电子有限公司 | Display panel and display device |
| CN109445160A (en) * | 2018-12-27 | 2019-03-08 | 厦门天马微电子有限公司 | Display module and display device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170124372A1 (en) * | 2015-10-30 | 2017-05-04 | Essential Products, Inc. | Fingerprint sensors for mobile devices |
| CN106940488A (en) * | 2017-04-27 | 2017-07-11 | 上海天马微电子有限公司 | Display panel and display device |
| CN109445160A (en) * | 2018-12-27 | 2019-03-08 | 厦门天马微电子有限公司 | Display module and display device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021017188A1 (en) * | 2019-07-26 | 2021-02-04 | 武汉华星光电技术有限公司 | Display panel control system and display panel control method |
| CN110687720A (en) * | 2019-09-05 | 2020-01-14 | 深圳市德仓科技有限公司 | Backlight module, display screen and terminal |
| CN110865479A (en) * | 2019-11-28 | 2020-03-06 | 维沃移动通信有限公司 | Display device and electronic apparatus |
| WO2021139760A1 (en) * | 2020-01-10 | 2021-07-15 | 京东方科技集团股份有限公司 | Display apparatus having fingerprint recognition function |
| US11867993B2 (en) | 2020-01-10 | 2024-01-09 | Boe Technology Group Co., Ltd. | Display device with fingerprint recognition function |
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| CN109765724B (en) | 2022-04-05 |
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