COLOR FILTER SUBSTRATE AND MANUFACTURING METHOD OF THE SAME, AND DISPLAY PANEL

• Main Authors: YOSHINO HIKARU, MIKUMO KATSUHIRO, MORINAGA JUNICHI
• Format: Patent
• Language: English; Japanese
• Published: 13.06.2019
• Subjects: ADVERTISING; CRYPTOGRAPHY; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; DISPLAY; DISPLAYING; EDUCATION; FREQUENCY-CHANGING; LABELS OR NAME-PLATES; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; SEALS; SIGNS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

To prevent occurrence of density unevenness or decrease in light transmittance in a peripheral part of a light-shielding layer in a color filter substrate including the light-shielding layer and a color layer.SOLUTION: A CF substrate (color filter substrate) 10 includes a glass substrate (light-transmitting substrate) 11, a light-shielding layer 51 formed to have a predetermined pattern on the glass substrate 11, a light-transmitting layer 53 formed along an outer edge of the light-shielding layer 51 on the glass substrate 11, and a color layer 52 formed on the glass substrate 11 and colored so as to give a predetermined color to transmitted light. The color layer 52 is formed in such a manner that the color layer starts from a non-interposed region BNR having no light-shielding layer or the like, where the layer is deposited directly on a back surface (upper surface) of the glass substrate 11 without any of the light-shielding layer 51 and the light-transmitting layer 53 interposed, and climbs up the back surface (upper surface) of the light-transmitting layer 53 to overlap the back surface (upper surface) of the light-shielding layer 51. The light-transmitting layer 53 is formed in such a manner that the layer shows a higher light transmittance than the color layer 52 in the whole wavelength region of visible light and has a thickness dimension d3 on the non-interposed region BNR side smaller than a thickness dimension d1 of the light-shielding layer 51.SELECTED DRAWING: Figure 3 【課題】遮光層及び着色層を備えるカラーフィルタ基板において、遮光層の周辺部分における濃度ムラの発生や光透過率の低下を抑制する。【解決手段】ガラス基板（光透過性基板）１１と、ガラス基板１１上に所定のパターンを有するように形成される遮光層５１と、ガラス基板１１上に遮光層５１の外縁に沿って形成される光透過層５３と、ガラス基板１１上に形成され、透過光が所定の色を呈するように着色された着色層５２と、を備えるＣＦ基板（カラーフィルタ基板）１０において、着色層５２は、遮光層５１又は光透過層５３の何れも介さずにガラス基板１１の裏面（上面）に積層される遮光層等非介在領域ＢＮＲから、光透過層５３の裏面（上面）に乗り上げて遮光層５１の裏面（上面）に重畳されるように形成されており、光透過層５３は、可視光の全波長領域において着色層５２よりも高い光透過率を示すとともに、その遮光層等非介在領域ＢＮＲ側の厚さ寸法ｄ３が遮光層５１側の厚さ寸法ｄ１よりも小さくなるように形成される。【選択図】図３