FR3131055B1 - Ecran d'affichage comprenant des pixels d'affichage à diodes électroluminescentes - Google Patents

Ecran d'affichage comprenant des pixels d'affichage à diodes électroluminescentes Download PDF

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Publication number
FR3131055B1
FR3131055B1 FR2114277A FR2114277A FR3131055B1 FR 3131055 B1 FR3131055 B1 FR 3131055B1 FR 2114277 A FR2114277 A FR 2114277A FR 2114277 A FR2114277 A FR 2114277A FR 3131055 B1 FR3131055 B1 FR 3131055B1
Authority
FR
France
Prior art keywords
light
emitting diode
display screen
circuit
electrodes
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
FR2114277A
Other languages
English (en)
Other versions
FR3131055A1 (fr
Inventor
Frédéric Mercier
Hugues Lebrun
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.)
Aledia
Original Assignee
Aledia
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 Aledia filed Critical Aledia
Priority to FR2114277A priority Critical patent/FR3131055B1/fr
Priority to PCT/EP2022/085752 priority patent/WO2023117605A1/fr
Priority to TW111148945A priority patent/TW202334930A/zh
Publication of FR3131055A1 publication Critical patent/FR3131055A1/fr
Application granted granted Critical
Publication of FR3131055B1 publication Critical patent/FR3131055B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control 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
    • G09G3/22—Control 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 using controlled light sources
    • G09G3/30—Control 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 using controlled light sources using electroluminescent panels
    • G09G3/32—Control 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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control 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
    • G09G3/2007—Display of intermediate tones
    • G09G3/2014—Display of intermediate tones by modulation of the duration of a single pulse during which the logic level remains constant
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809—Several active elements per pixel in active matrix panels
    • G09G2300/0833—Several active elements per pixel in active matrix panels forming a linear amplifier or follower
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809—Several active elements per pixel in active matrix panels
    • G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0243—Details of the generation of driving signals
    • G09G2310/0259—Details of the generation of driving signals with use of an analog or digital ramp generator in the column driver or in the pixel circuit
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264—Details of driving circuits
    • G09G2310/0272—Details of drivers for data electrodes, the drivers communicating data to the pixels by means of a current
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264—Details of driving circuits
    • G09G2310/0275—Details of drivers for data electrodes, other than drivers for liquid crystal, plasma or OLED displays, not related to handling digital grey scale data or to communication of data to the pixels by means of a current
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/06—Details of flat display driving waveforms
    • G09G2310/066—Waveforms comprising a gently increasing or decreasing portion, e.g. ramp

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of El Displays (AREA)

Abstract

Ecran d'affichage comprenant des pixels d'affichage à diodes électroluminescentes La présente description concerne un écran d'affichage (10) comprenant - des circuits d'affichage (12i,j) comprenant chacun une diode électroluminescente, une source de courant commandable alimentant la diode électroluminescente et un circuit de pilotage adapté à fournir un signal, modulé en largeur d'impulsions, de commande de la source de courant ; - des premières, deuxièmes, et troisièmes électrodes (18i, 20i,16i) reliées aux circuits de pilotage ; - un circuit (22) de fourniture d'un signal de sélection (Comi) sur chaque première électrode ; - un circuit (24) de fourniture de signaux analogiques de données (Dataj) sur les deuxièmes électrodes ; - un circuit de fourniture d'une tension d'alimentation (Vcc, Gnd) des diodes électroluminescentes sur les troisièmes électrodes, dans lequel chaque signal de sélection ou la tension d'alimentation comprend des phases espacées contenant chacune un signal analogique périodique par intervalle utilisé pour la commande de la source de courant. Figure pour l'abrégé : Fig. 1
FR2114277A 2021-12-22 2021-12-22 Ecran d'affichage comprenant des pixels d'affichage à diodes électroluminescentes Active FR3131055B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR2114277A FR3131055B1 (fr) 2021-12-22 2021-12-22 Ecran d'affichage comprenant des pixels d'affichage à diodes électroluminescentes
PCT/EP2022/085752 WO2023117605A1 (fr) 2021-12-22 2022-12-14 Ecran d'affichage comprenant des pixels d'affichage a diodes electroluminescentes
TW111148945A TW202334930A (zh) 2021-12-22 2022-12-20 包括具有發光二極體的顯示像素的顯示螢幕

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2114277 2021-12-22
FR2114277A FR3131055B1 (fr) 2021-12-22 2021-12-22 Ecran d'affichage comprenant des pixels d'affichage à diodes électroluminescentes

Publications (2)

Publication Number Publication Date
FR3131055A1 FR3131055A1 (fr) 2023-06-23
FR3131055B1 true FR3131055B1 (fr) 2024-06-28

Family

ID=80787449

Family Applications (1)

Application Number Title Priority Date Filing Date
FR2114277A Active FR3131055B1 (fr) 2021-12-22 2021-12-22 Ecran d'affichage comprenant des pixels d'affichage à diodes électroluminescentes

Country Status (3)

Country Link
FR (1) FR3131055B1 (fr)
TW (1) TW202334930A (fr)
WO (1) WO2023117605A1 (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3065116B1 (fr) 2017-04-05 2021-08-27 Commissariat Energie Atomique Dispositif d'affichage d'images emissif a led
US10764975B2 (en) * 2018-03-30 2020-09-01 Facebook Technologies, Llc Pulse-width-modulation control of micro light emitting diode

Also Published As

Publication number Publication date
WO2023117605A1 (fr) 2023-06-29
FR3131055A1 (fr) 2023-06-23
TW202334930A (zh) 2023-09-01

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