CN111367121A - 一种用于提高采光量的lcd屏及其方法 - Google Patents

一种用于提高采光量的lcd屏及其方法 Download PDF

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CN111367121A
CN111367121A CN202010196132.1A CN202010196132A CN111367121A CN 111367121 A CN111367121 A CN 111367121A CN 202010196132 A CN202010196132 A CN 202010196132A CN 111367121 A CN111367121 A CN 111367121A
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backlight
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钱佳宁
祝海龙
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Fujian Huajiacai Co Ltd
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    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509Filters, e.g. light shielding masks
    • G02F1/133514Colour filters
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/302Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements characterised by the form or geometrical disposition of the individual elements
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406Control of illumination source
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3607Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/02Constructional features of telephone sets
    • H04M1/0202Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026Details of the structure or mounting of specific components
    • H04M1/0264Details of the structure or mounting of specific components for a camera module assembly
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/02Constructional features of telephone sets
    • H04M1/0202Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026Details of the structure or mounting of specific components
    • H04M1/0266Details of the structure or mounting of specific components for a display module assembly
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70Circuitry for compensating brightness variation in the scene
    • H04N23/75Circuitry for compensating brightness variation in the scene by influencing optical camera components

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Abstract

本发明公开了一种用于提高采光量的LCD屏,包括:背光板、LCD面板。所述LCD面板包含:多基色像素区、RGB像素区。所述背光板上还设置有孔,所述孔位于所述多基色像素区下方。在拍照时,前置摄像头区域采用多基色像素的排列方式可以增加光线透光量,提高拍照效果。同时LCD屏幕手机实现屏下摄像头技术,不拍照时提高画面显示效果,拍照模式下可以显著提高进入摄像头的光线,让隐藏在背光下的摄像头拍照成像,从而提高LCD屏幕手机屏占比。

Description

一种用于提高采光量的LCD屏及其方法
技术领域
本发明涉及LCD显示领域,尤其涉及一种用于提高采光量的LCD屏及其方法。
背景技术
手机全面屏已成为设计的主流,而前置摄像头成为提高全面屏屏占比的重要技术关卡。为了提高全面屏的屏占比,屏下摄像头技术横空而出。目前屏下摄像头技术都是搭配AMOLED屏幕,然而LCD屏幕仍然占大多数,因此提出LCD屏幕搭配屏下摄像头的方案。
目前存在屏下摄像头搭配AMOLED屏幕,因为AMOLED是自发光,不存在背光的影响,且面板厚度可以足够薄来透过光线,从而实现AMOLED屏幕的屏下摄像头方案,从而提高屏占比。但LCD屏的面板较厚,同时还存在有像素,不利于透过光线。
发明内容
为此,需要提供一种用于提高采光量的LCD屏,解决LCD面板透光不足的问题。
为实现上述目的,发明人提供了一种用于提高采光量的LCD屏,包括:背光板、LCD面板;
所述LCD面板包含:多基色像素区、RGB像素区;
所述背光板上还设置有孔,所述孔位于所述多基色像素区下方。
进一步地,还包括摄像头,所述摄像头位于所述孔中。
进一步地,所述背光板包含:第一区域、第二区域;
所述孔位于所述第一区域上,所述背光板用于单独调整所述第一区域或者第二区域的背光亮度。
进一步地,所述第一区域与所述多基色像素区重合。
进一步地,所述背光板还包括第三区域,所述背光板用于单独调整第三区域的背光亮度。
进一步地,所述第三区域与第一区域为同一亮度。
进一步地,所述多基色像素区采用RGBW或RYYGBW的像素排列方式。
发明人还提供了一种调整采光量方法,用于实施例的任一项所述的LCD屏,包括步骤:
向LCD屏的多基色像素区传输黑画面资料,开启LCD屏摄像头位置的背光;
根据摄像头获取到的光线计算反射进摄像头光线和背光亮度的比值;
向多基色像素区传输白画面资料,第一区域背光关闭,采用摄像头进行拍照;
根据比值和摄像头当前采集到的亮度,计算得到实际光线亮度。
区别于现有技术,上述技术方案通过LCD屏幕前置摄像头区域的像素排列由RGB像素排列方式变为多基色像素排列方式,来改变LCD屏幕前置摄像头区域的透光度,提高透光量,其余区域的像素排列方式仍为RGB排列方式。在拍照时,前置摄像头区域采用多基色像素的排列方式可以增加光线透光量,提高拍照效果。但是由于摄像头区域和非摄像头区域的像素排列方式不同,在不拍照时,画面显示效果会有差异性,这里需要采用SPR算法来消除这种差异性,提高画面整体显示效果。同时LCD屏幕手机实现屏下摄像头技术,不拍照时提高画面显示效果,拍照模式下可以显著提高进入摄像头的光线,让隐藏在背光下的摄像头拍照成像,从而提高LCD屏幕手机屏占比。
附图说明
图1为LCD屏下摄像头架构图;
图2为背光分区控制结构图;
图3为第一区域、第二区域、第三区域亮暗分布结构图;
图4为RGB结合RGBW、RYYGBW的像素排列方式;
图5为反射光线滤除流程图。
附图标记说明:
1、背光板;
11、第一区域;12、第二区域;13、第三区域;
111、孔区域;
2、摄像头;
3、LCD面板;
31、多基色像素区;32、RGB像素区。
具体实施方式
为详细说明技术方案的技术内容、构造特征、所实现目的及效果,以下结合具体实施例并配合附图详予说明。
请参阅图1至图5,在本实施例中提供了一种用于提高采光量的LCD屏,包括:背光板1、摄像头2、LCD面板3。所述LCD面板3包含:多基色像素区31、RGB像素区32。所述背光上设置有小,用于放置所述摄像头2;所述孔位于所述多基色像素区31下方。上述技术方案通过LCD屏幕前置摄像头区域的像素排列由RGB像素排列方式变为多基色像素排列方式,来改变LCD屏幕前置摄像头区域的透光度,提高透光量,其余区域的像素排列方式仍为RGB的排列方式。在拍照时,前置摄像头区域采用多基色像素的排列方式可以增加光线透光量,提高拍照效果。但是由于摄像头区域和非摄像头区域的像素排列方式不同,在不拍照时,画面显示效果会有差异性,这里需要采用SPR算法来消除这种差异性,提高画面整体显示效果。同时LCD屏幕手机实现屏下摄像头技术,不拍照时提高画面显示效果,拍照模式下可以显著提高进入摄像头2的光线,让隐藏在背光下的摄像头2拍照成像,从而提高LCD屏幕手机屏占比。
LCD屏幕手机实现屏下摄像头2技术,就不能忽略背光的存在。现提出背光板1在放置前置摄像头2的位置挖一个孔。且背光板1采用局部调节方式,以控制不同区域的背光亮度。在拍照时放置摄像头2区域背光暗掉,使得外部光线进入摄头;在不拍照时,此区域背光正常点亮。请参阅图2,为此在本实施例中所述背光板1包含:第一区域11、第二区域12,在某些实施例中还包括第三区域13,第三区域可以单独调节亮度。所述孔位于所述第一区域11上,所述第一区域11能区别与第二区域12、第三区域13可以单独的调节亮度,且所述孔位于所述第一区域11内。采用屏下摄像头2方案时的背光分区方案时,可以看到此时背光板1在需要放置摄像头2的位置挖一个孔,在拍照模式下外部光线可以通过此孔洞进入摄像头2;不拍照时,该区域像素正常驱动点亮。这就需要将背光板1分区块控制,来调整背光的亮度,甚至关闭。这里将背光板1进行分区,请参阅图2。背光工作原理如下:拍照模式下,控制第一区域11背光关掉,不显示画面,外部光线透过孔洞进入摄像头2,从而实现拍照功能;这时第二区域12、第三区域13背光正常发光。不拍照时,第一区域11、第二区域12、第三区域13正常发光。所述背光板1将背光区域进一步的分割,采用局部调节方式,以控制不同区域的亮度,来配合摄像头2的使用。其通过让跟多光线进入摄像头2的方式,将大幅提高拍摄效果。
当然,请参阅图3,在某些实施例中,所述第三区域13与第一区域11将一同调节亮度。拍照模式下,控制第一区域11、第三区域13背光关掉,不显示画面,外部光线透过孔洞进入摄像头2,从而实现拍照功能;这时第二区域12背光正常发光。不拍照时,第一区域11、第二区域12、第三区域13正常发光。一同调节亮度将提升画面整体效果。
请参阅图2,在本实施例中,所述第一区域11还包含位于所述孔四周的孔区域111。需要说明的是,第一区域11摄像头2位于背光挖孔中,因此不拍照时,孔区域111背光亮度和其它区域的背光亮度存在差异,会比较暗一点,这会使画面显示效果不均匀。这里我们把摄像头2所在第一区域11背光再细划分,使不拍照显示画面时孔区域111的背光区域亮度比其它区域稍亮,这样使得画面整体亮度看起来更均匀,显示效果更好。
在本实施例中,所述第一区域11与所述多基色像素区31重合。所述第一区域11与所述多基色像素区31的重合将通过增加透光性以及减少背光量两个方面来提升拍摄的整体效果。
为了使外部光线更多的进入前置摄像头2,请参阅图4,在本实施例中,所述多基色像素区31采用RGBW或RYYGBW的像素排列方式。具体来说就是多基色像素区31采用RGBW的像素排列方式、RGB像素区32采用RGB的像素排列方式。多基色像素区31为放置摄像头2位置,为了进入更多的进光量,用RGBW排列来代替RGB像素排列,这意味着摄像头2可以接收更多的外来光线,从而提升黑暗场景下的拍照质量。然而RGB像素区32仍然采用RGB排列方式。由于多基色像素区31和RGB像素区32的像素排列方式不同,在不拍照显示画面时会导致两个区域的显示效果有差异。这里我们对多基色像素区31的像素排列采用SPR算法,使得多基色像素区31的像素重新排列,从而使整体画面的显示效果可以得到显著改善。另一种提高进光量的像素排列方式则是采用RYYGBW的像素排列方式,为RGB结合RYYGBW相结合的像素排列方式。具体来说就是多基色像素区31采用RYYGBW的像素排列方式,RGB像素区32采用RGB的像素排列方式。多基色像素区31中放置前置摄像头2,为了进入更多的进光量,采用2×3的RYYGBW排列来代替RGB像素排列,RYYGBW的排列方式,增加Y,比单纯的RGB排列获得更多的光线,也能保证其他两种颜色光线不受影响;增加W,在弱光情况下的光线进入量会更大幅度提升。RYYGBW的排列方式相较于单独的RYB排列方式,在显示画面时不会使绿色失真;同时加入W,使得较暗环境下可以进入更多光线到摄像头2。由于含有两个Y,在正常情况下总体色彩可能会偏暖,所以在多基色像素区31需要白平衡算法来解决偏色问题,同时需要SPR算法使多基色像素区31的像素重新排列,从而使整体画面的显示效果可以得到显著改善。
这里在拍照模式下,由于有背光的存在,进入的光线会通过背光板1产生反射光线,这些反射光线通过下偏光板反射进摄像头2,使拍照的图片画面效果过亮,这不是我们所想要的。因此,请参阅图5,本实施例提供了一种用于提高LCD屏下摄像头2获得光线量的算法,以摄像头当前采集亮度=实际亮度(外部环境)+实际亮度(外部环境)乘上比值为基础,向LCD屏的多基色像素区传输黑画面资料,开启LCD屏摄像头位置的背光。根据摄像头获取到的光线计算反射进摄像头光线和背光亮度的比值。向多基色像素区传输白画面资料,第一区域背光关闭,采用摄像头进行拍照。根据比值和摄像头当前采集到的亮度,计算得到实际光线亮度。
为了减小背光板1反射的影响,本实施例提出滤除掉反射光线的方法。首先向多基色像素区31送黑画面资料,这时第一区域11的背光不关闭,由于下偏光板的存在会反射背光光线,计算反射进摄像头2光线和背光亮度之比,记作反射比α;然后将第一区域11背光关掉,向多基色像素区31送白画面资料,这时外部光线进入摄像头2,因此要减去反射进摄像头2光线来滤除反射光线影响,这是实际的光线投入量,这样拍摄的照片即可达到与真实场景一致的效果。
需要说明的是,尽管在本文中已经对上述各实施例进行了描述,但并非因此限制本发明的专利保护范围。因此,基于本发明的创新理念,对本文所述实施例进行的变更和修改,或利用本发明说明书及附图内容所作的等效结构或等效流程变换,直接或间接地将以上技术方案运用在其他相关的技术领域,均包括在本发明专利的保护范围之内。

Claims (8)

1.一种用于提高采光量的LCD屏,其特征在于,包括:背光板、LCD面板;
所述LCD面板包含:多基色像素区、RGB像素区;
所述背光板上还设置有孔,所述孔位于所述多基色像素区下方。
2.根据权利要求1所述一种用于提高采光量的LCD屏,其特征在于,还包括摄像头,所述摄像头位于所述孔中。
3.根据权利要求1或2所述一种用于提高采光量的LCD屏,其特征在于,所述背光板包含:第一区域、第二区域;
所述孔位于所述第一区域上,所述背光板用于单独调整所述第一区域或者第二区域的背光亮度。
4.根据权利要求3所述一种用于提高采光量的LCD屏,其特征在于,所述第一区域与所述多基色像素区重合。
5.根据权利要求3所述一种用于提高采光量的LCD屏,其特征在于,所述背光板还包括第三区域,所述背光板用于单独调整第三区域的背光亮度。
6.根据权利要求5所述一种用于提高采光量的LCD屏,其特征在于,所述第三区域与第一区域为同一亮度。
7.根据权利要求1所述一种用于提高采光量的LCD屏,其特征在于,所述多基色像素区采用RGBW或RYYGBW的像素排列方式。
8.一种调整采光量方法,用于如权利要求1到7任一项所述的LCD屏,其特征在于,包括步骤:
向LCD屏的多基色像素区传输黑画面资料,开启LCD屏摄像头位置的背光;
根据摄像头获取到的光线计算反射进摄像头光线和背光亮度的比值;
向多基色像素区传输白画面资料,第一区域背光关闭,采用摄像头进行拍照;
根据比值和摄像头当前采集到的亮度,计算得到实际光线亮度。
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